IG-86 vs Luke vs Geo Soldier

Hi, i need advice in getting my next DPS char because i just maxed out JC 7*, so i need to choose my new farming from cantina battles.

My actual PVP team is:

Sidious 7*
Lumi 7*
Daka 6*
JC 7*
Dooku 4*.

I just started farming IG-88, Poe and Poggle for my next formation but in case i need a dps i wanna know who from those three to choose.

Thanks!