Need help with arena squad

PenguinPirate77

Hey all, just need some advice on my current/future arena squad. I have some decent characters built up a little bit and am working on others. Here are my main heroes...

QGJ 7* Gear lvl 8
Lando 7* Gear lvl 8
STH 7* Gear lvl 8
GS 7* Gear lvl 9
SF 7* Gear lvl 7
Phasma 7* Gear lvl 7
Luminara 7* Gear lvl 7
Sid 7* Gear lvl 7
Boba 5* Gear lvl 8
JC 6* Gear lvl 7
Biggs 5* Gear lvl 8
Wedge 5* Gear lvl 7
Ackbar 5* Gear lvl 7

Vader and ep are low right now. I'm working up my rebels right now for ep, but what should I do for now?

If you'd like to look at my full collection here is the link
https://swgoh.gg/u/penguinpirate7/collection/