Yeah, I'm at Main Adventure 142 with Poison Bunny Cape Alicia at 117 and everyone else is 120. Getting past that is probably possible, but there's nothing for it except more bragging rights, so nah.
Bunny for Alicia, Alia and Gnep, Half-plate everyone else. Max Camp.
Arrangement in a pyramid pattern, each front line blocking for the back:
Kelile Julia
Tia Sophie Alicia
Alia Gnep Cyan
It might actually be better to not keep the bombers all the way at the back and swap their places with the single-targetters, since bombers' single-target damage is IIRC weaker, so unless the final enemies are positioned good, bombs aren't the best at cleaning up?
EDIT: Just a hypothesis since I don't feel like testing.
i am using this exactly, everyone and everything is maxed, and i am stalled at stage 145.
Wow it takes a lot of fishing to get a good enemy arrangement but it can be done.
Least amount of bats as possible (preferably only one) -> Enemies are as grouped as possible, with the bat somewhere near the middle -> Poison the bat first, then get everyone poisoned -> Hope it works out, but if not, resume fishing
