Dark Side HELP

Maskarii

My Friend Diehard is at Level 6 to farm Asoka Gear.

Enemies are Hoth Rebells max attack 8 K.

His Team is

Count D 5*
D Sid 7*
Ventress 7*
Vader 4*
IG 86 7*
support C P 7*

What's your Opinion ?

Change Vader for CT 5555
and IG for D Maul ?

Thanks for any Help and Sorry for worst english