Endor Escalation - Minimum, best Team, Strategy

I am using:
Ewok Elder & Ewok Scout (7* g9)
Teebo (7* g8)
Chief Chirpa (5* g7)
Wicket (4* g7)

Definitely the best strategy that makes the whole fight easier is to use Wicket's special with assist on Teebo and use it on AT-ST - this way you can not only remove turn meter during Teebo's turn, but also with Wickets special...this way you can prevent AT-ST to take a turn even when your Teebo is slower than AT-ST...
Another tip is to always save Chirpa's special swarm attack for trooper phases (phase 2 and phase 4) and use it to quickly get rid off (or at least deal massive damage) to one of the troopers...