Current Squad Help

Grundy

Need some advice for Arena and GW. Also who to farm. currently around 300 in arena. Thanks
Luminara lvl 70 7*
Sid lvl 70 7*
Kylo lvl 70 5*
Dooku lvl 70 4*
Phasma lvl 70 4*
JC lvl 61 4*
Chewy lvl 53 6*
Hoth Rebel Scout lvl 53 4*
Talia lvl 52 4*
UroRRuR’R’R lvl 52 4*
Jawa lvl 52 3*
Poe lvl 31 4*
FO Stormtrooper lvl 40 3*
Res. Trooper lvl 40 2*
GS lvl 40 1*
Royal Guard lvl 40 1*
Snowtrooper lvl 40 1*
Biggs D lvl 25 2*
Clone Sgt. lvl 21 3*
FO TIE Pilot lvl 23 2*
QGJ lvl 10 4*
Ewok Scout lvl 21 1*
Cad Bane lvl 8 4*
Obi-Wan lvl 6 4*
IG86 lvl 7 3*
Ugnaught lvl 7 2*
Fives lvl 4 3*
Teebo lvl 6 2*
Lando C lvl 3 4*
Nightsister I. lvl 4 1*
Darth V lvl 1 4*