For Chewbacca:
Will I be ok with that team? Or do I absolutely need somebody else? Cause I read that this event is difficult has fu**
Greedo is one of the least useful bounty hunters, but he's still okay.
You really need to work on the Hound's Tooth ship, and that's on the same node as Jango Fett, who is much better than Greedo. But I understand if you don't want to delay Chewbacca while waiting for Jango. You'll have to decide for yourself whether you want to replace Greedo so you aren't gearing up one of the less-useful toons. You'll save gear (which isn't nothing) but you'll have to wait for Jango, which might make things take longer.
Me? I'd gear Greedo to g11 and stop. He actually has one of the easier gear profiles, so while you never want to waste gear, it's not like he's going to suck up multiple stun guns per gear tier or something ridiculous.
Take Boba to g12, Take Bossk to Relic, Jango to g12 once you get him, other BH to g11 (and Greedo stop at g9, if you're going to wait for Jango, otherwise to g11).
Ahsoka ??
Yes, Ahsoka is a good character to gear. Eventually you will need relics on her for certain events and for your Padme squad, and her ship is low on health, so if you end up using her in fleet giving her relics is an excellent idea.
Should I concentrate on gearing up my rebels? Phoenix Squad/Wedge/Biggs etc.
If yes who should I concentrate on and to what gear for now?I have Sabine Wren LV 85 5* 42/85 Should I make it a priority to bring her to 7*?
Ignore Wedge & Bistan and their ships. Biggs should be at least g11. But Biggs isn't an endgame character, so if you take Biggs to g12, don't go any farther than that. Phoenix has the best Rebel ships until you get the MilFalc. You want all your Phoenix toons to be g11 & 7*. Ezra & Kanan should be g12. I'm not sure about Sabine, maybe g11, maybe g12. She's one of the more useful and also the more fragile Phoenix toons, so extra gear is good, but you're going to have lots of other priorities. Your call.
You want Ackbar to be G12 + maybe 1-3 gear pieces. You can't really use Biggs as an effective tank without dropping in someone who isn't a rebel (because there aren't good rebels for inflicting Target Lock).
The two best are Anakin & Vader, with TFP also pretty good for people who don't have a large fleet developed already.
You do need to continue to work on Jolee, but your very next Fleet Mode farm should be Anakin's ship. In the meantime, make sure Vader's ship is 7* and maxed.
Cassian LV 51/Jyn LV 51/K2 LV 80
I should level them up to LV 85 for my ship right ?
Yes. Take them all to g11, as well, so you can max out all the ship's abilities. This is particularly important for K2s0 who gives you an extra dispel at max. And Jyn should be on your list of characters to zeta (but not the others). There are Rogue 1 missions in Hoth TB that benefit hugely from Jyn's zeta and thus benefit your whole guild. You can also get a lot of mileage out of Jyn's zeta in GAC.
She doesn't replace any other priorities (CWS/Han/R2 or Palp), but she should be on the secondary tier of toons you should zeta sometime soon, just not immediately. She might fall further, actually, if you get other new toons that you want to zeta more (like Chewbacca or C3p0 or Jolee), but if you don't zeta her while your guild is still playing Hoth TB, you'll never get the use out of it that you should. And since Rogue 1 was a one-time movie, Jyn will never get a rework. So... if you don't actually zeta Jyn while still playing Hoth TB, don't ever zeta Jyn.
For Rey JT event :
I have
BB8 85/Rey 78/Finn 70/VS Han 65/VS Chew 65
I should also bring them to lv 85 I guess?
Level 82 is enough and saves you 1M credits per toon. The exception is Finn. Give him level 85 and put as much gear as you can on him. You actually want to Relic the guy if you can, but you don't have to do that right away. The point is that no gear is wasted on Finn. Chewy would be good to take to g10, maybe even g10 + a few pieces, but Vet Han is fine at g8 or g9. Rey is good enough at g10 + 0 pieces, but I like her as a character and if you have gear to spare, taking her to g11 or g12 is fine.
As soon as you have JTR + a g12 Finn you can start solo'ing all of phase 4 of the tank raid, which gets you better scores, which gets you better gear, which really rewards you for your investment.
As soon as you have JTR + g11 Finn (yes, I realize g11 is less than g12) + g10 C-3p0 + BB-8 + G12 CLS you can solo the entire Tank raid from start to finish with that one team. You're a good way away from getting 7* c3p0 because you've got other priorities than ewoks right now, but it's good to know what you're building towards.
GWS : All Ships. (anything else? Bodhi/Nighsister/Teebo/Datcha/IG-86/Tusken/Pilot/Magma) all the others are max out.
Ships only until you have 5k or 10k spare GW Tokens saved up, just to make sure you never miss a rare ship. Once you have that, you can pick up Magma, Teebo, Nightsister, Resistance Pilot, Dathcha, Tusken, IG-86, in that order. There are several competitors for worst toon in the game, but Bodhi is definitely high on that list.
Cantina Store : HRScout, Old Daka (in that order)
Yep.
Squad Arena : Cassian, Ventress, IG-88, Nute Gunray, & HK-47 (in that order)
Yep.
Guild Store : Dengar and Equipement
There are a couple ewoks that show up in there also, including one who is rare. You want to pick up those ewoks.
Fleet Store : 1 more Genosian Soldier to buy after that he will be max out Genosian Spy should now be a priority right ? I was keeping a eye out for TIE first order pilot and his ship. What should I prioritize in the fleet store?
Vader's ship, Slave 1, Umbarran fighter, Sun Fac's Ship, then any Geo character, then Chirrut.
When you're done with all those, you can pick up Rex's Ship and the Scimitar, then after that, the characters Clones (all), Zam, Tusken, Fulcrum, Scarif Pathfinder.
Once you've got all that, it's nothing but zeta mats forever.
Hard Battle : I was working on Jolee Bindo should I stop working on him for right now ?
Nope. You need Jolee. Next up in Fleet Battle hard nodes is Anakin's ship.
Hard Battles on Light Side/Dark Side should be used for Wicket, Bossk, IG-2000, Hound's Tooth, Xanadu Blood. (Jango comes free with Hound's Tooth). After that, Range Trooper, Mother Talzin, & NS Zombie.
Guild Event Store : Who should I look for ? Hoth Rebel Soldier, Baze Malbus and what ship should I absolutely buy if I see them there?
Baze, for sure. Other than that, you probably want to get Hermit Yoda. Maybe Sun Fac's Starfighter, if you're in a hurry to finish that farm (like if you have Sun Fac complete and at least g10 and he's waiting on his ship to be effective).
Do not buy Hoth Rebel Soldier here. These tokens are too precious and you have much better uses for them.
Don't ever buy gear from the Guild Event store. Never. Even if you have 100k tokens saved up, you're going to need them for Malak and General Anakin and probably other toons as well. If you really do have Hermit Yoda & Baze complete and more than 100k tokens and are just burning for things to spend it on, get the Wampa.
Hope that helps. I'm out and you have plenty to work on for a good while!