So, CLS is a terrible first "big" journey character, becouse you need so much other stuff to rly make his team work.(Chewy = BHs, C3P0 = Ewoks, Chewpio = x1 Farm)
Not going Geos will hurt you alot in Fleet arena, and from my experience, you wont get the Tie Advanced or the Slave 1 in time for the Zeta challenge.
I would farm Geos, as they double down as a very good team for the first month of being 85, AND their ships will get you high fleet arena placements when paired together with the vulture droid (farmable very early, and highly recommended) and the hyena bomber (farmable later, but its a very good node in general), under a Tarkin lead.
If you also plan to go JKR, my recommendation would be to get DR and Malak as well. And once you have done that, you could go for a GL, and SEE would be the most logical step further. (You allready have alot of the empire toons unlocked, and then getting troopers is never a bad thing)
That also means you have knocked out alot of the assault battles allready:
Phoenix will give you military might up to the bonus tier (at the gear level you stop working on them)
Phoenix will also give you some tiers of Secrets and Shadows
Troopers will knock out Forest Moon and Rebel Roundup at the Challenge tiers, once you have them reliced (and you do that, if you go for SEE
JKR will knock out Ground War at least challenge tier 1 (thats with 1 relic in your team)
DR/Malak will knock out Places of Power at at least challenge tier 1.
that gives your 4/6 Assault Battles at the Challenge Tier, and thus very good rewards, fairly early on from there.
You also have potential for a good cpit team (looking at your troopers), and you have 3 Teams that should do 3-4 waves each in geo dark side TB (Troopers, Sith, Geos), and also contribute a Wat shard.
Building Geos means you should get into a guild doing at least dark side geo TB (probably light side as well, in the GP range of 160-220m gp) at a point very soon after 85, or perhaps even a bit before. That will get you a malevolence pretty early in the game, and you can dominate your fleet shard with it.