Just got Thrawn! Who to swap?

"jroos100;d-166159" wrote:
Heya ya'll,

So I just unlocked Thrawn at 5*. Not sure if I could get him to 6*/7* so the question is for a 5* Thrawn.

Currently I run an Empire team in arena:
EP (6* (L))
Vader (5*)
Tarkin (7*)
TFP (7*)
KRU (7*)

I used Stormtrooper before but KRU is so much better as a tank.

My question:

Who should I swap in my team, and why?

EDIT: I am level 78 so I do not have access to zeta's yet.