Chirpa 7*, Teebo 7*, Elder 7*, Scout 7*, Wicket 4*. Chripa is g9, Teebo, Elder and Scout g8, Wicket g7. Wicket's abilities are all level 3, everyone else's abilities are 7, except Chirpa's leader skill, which is omega'd.
I gave everyone a +30 speed arrow, then filled in the rest with Health Up set mods with nothing in particular. Teebo has most of a Potency set already because I use him in the Rancor raid, so he was pretty high potency (not logged in right now so I can't check the amount). But the important thing to bear in mind is that, aside from the speed arrow, everyone had pretty mediocre stuff equipped.
What helped most was in phase 4 killing off the magmatroopers (or whatever they are) first, since their AoE does a lot of damage. Only call Elder (to give turn meter) or Teebo (to drop the enemy's turn meter) with Wicket's assist. You need to keep calling Elder so he can get as many turns in as possible to keep the cleanse available for when the AT-ST AoEs.
