What would be my best team for the characters that I have

I'm a returning player after a 4 month break, level 73. I am wondering who I should start to farm and use in an Arena team that can get me to the top 100. Here are my following characters:
Luminara
Mace Windu
IG-86
QGJ
JC
GS
Ig88
Count Dooku
Darth Vader
RG
Plo Koon
Ahsoka Tano
Lando
Greedo
Tie Fighter Pilot
Yoda
Rey
Bistan