Possible Squad Arena Team

I suppose it is more a matter of being able to get some damage in. I sped up ezra and that has helped tremendously. The problem is he’s the only real source of damage and against teams that can stun/manipulate tm, i struggle to take anyone out. That’s one of the reasons I’m looking to change things up. I am working still on gearing ezra, but I’ve been told he’s the only one other than Sabine (who is a very slow farm) that is actually worth the effort to gear past g9. I’ve also tried to consider the gear redundancies in phoenix as kanan and zeb are nearly identical past g7 and those gear pieces mirror both ezra and hera at times. Basically, I’m working on getting a solid roster as well as continuing to place well in squad for the extra crystal. 50 crystal a day adds up in the long run. Would 5* Sabine as a replacement for 7* chopper be a viable solution to the damage problems?