Please note:
RESTARTING WILL NOT HELP IN FLEET.
In fleet you are not paired with people who installed the game on the same day you did. Your shard is full of people who unlocked fleet arena the same day you did. Since fleet arena didn't exist when you suspended your game, you won't have to compete against anyone who installed the game near when you did.
However, you will be at a serious disadvantage in Squad Arena for quite a while - basically until the meta turns over 2-3 times and the new meta is one you were prepared for because you skipped one or two metas before it. You'll have to decide if it's worth it to you to start over. I wouldn't, but that's just me.
If you stay with your current account, you'll be at an advantage in some ways in Fleet, b/c you are already level 76 and other people starting fleet are level 60. Your level advantage can help you there for a bit, although not as much as you'll lose by not having the right pilot toons geared...if you don't have the right pilot toons geared.
...and I just looked, and you don't have the right pilot toons geared.
Okay, it might be useful to you to start a new account. But if you're just playing for fun, then I wouldn't want to duplicate the work you've already done - even if it's only a couple months worth of work, that's still 2 months closer to the cool endgame content than you'd be if you start over. You'll have to decide if that's worth it to you.
As for what to work on, I've made previous guides, but the main points are:
Phoenix first. You want all 6 and gearing them is tedious (they require a large amount of Stun Guns, for instance), but is incredibly helpful in fleet - the Phoenix ships are very, very good and require you to gear the Phoenix squad to use them.
Jedi next - Bastila and Jolee Bindu are your foci here. You've already got other jedi, so just grab those two.
Use Phoenix to get Thrawn and Palpatine.
Flesh out Empire who will be very useful in Hoth TB (you won't be ready for Geo TB for a good long while). The best strategy for this is to get a good Imperial Trooper squad together, but use your ITs with Palpatine in the short run before you have enough for 2 separate empire squads. This means getting General Veers finshed right away, and zeta his unique as soon as you have 2 other 7-star ITs. Snowtrooper and Range Trooper are your best-bet easy farms for 2nd and 3rd troopers. In addition to ITs, get to 7* and give gear to both Darth Vader and Tie Fighter Pilot.
Whenever you have a chance, work on Bounty Hunters. They aren't the very first things you need, but they are very useful for a large number of events that provide important resources (Galactic Bounties, Credit Heist, etc.). Since you have to have Bossk, IG-88, Boba, and Cad Bane to get the Millennium Falcon, you might as well make those 4 of your first BH toons. Since you need 4 bounty hunter ships (Hound's Tooth, Xanadu Blood, Slave 1, and IG-2000) to get the Falcon and since Jango comes free with one of them (Hound's Tooth) that gives your starting BH squad.
Unfortunately, IG-88 is less useful in BH squads than elsewhere (esp being paired up with Grievous) and he does very poorly in the very important Chewbacca event. For that reason, you are going to want Dengar as a 6th bounty hunter. Dengar is incredibly useful in Chewbacca's event and lowers the amount of gear (and/or the number of restarts) needed to complete the event by quite a bit. He's also easier to gear than many toons (though IG-88 is as well).
BUT... with all that said, if the game isn't fun, there's no point in playing. So while Phoenix => Jedi => Empire => BH is a very efficient way to go about things, if you want to do something else because that's more fun to you, then do the fun thing. Always choose the fun thing. It is way too easy for the game to feel like a job with all the long-term work needed to collect and gear characters, so anything you do to make things more exciting and rewarding emotionally/personally is always going to be more important than the things you can do to shave 7.2% off the farm time of a toon you never really liked in the first place.
Take care, and never feel hesitant to ask more questions.