advice please on which characters to prioritise.

Ok. Update.
Leader is Lumi 4 star lvl 48
Chewie 4 star lvl 48
JC 3 star lvl 48
Tano 3 star lvl 48
Ventriss 4 star lvl 48

Currently completed GW twice.
And PVP rank around 180-200.

I need to unlock more LS normal and heroic for equipment matts so I was thinking of dropping Ventriss completely and getting eeth koth so I can push the LS chain and he would benefit more from Lumis leadership bonus.

Reason is I find my DS is very poor 1-2 star lvl 48 and can't complete normal lvl 4.
Hence wanting a team that can do LS side, pvp, cantina and GW without gimping myself or wasting training droids on a 5th poor LS character.

Thoughts