As Leef said, drop Cad. He's anti-jedi and you don't fight jedi in Territory Battles.
Only use Cad in the Special Mission where you fight a bunch of Wompas. Use Cad instead of Zam because all of her strengths (dodge, thermal detonators, etc) are countered by Wompa's kit (+Accuracy, at-will protection, etc).
But for the couple missions in later phases? Zam for sure.
Dengar brings two important things to the table: Stun and the assist on his basic. Just be sure to target Pilots first--both becuse they get 100% TM when you kill someone and because they have a group cleanse.