Interesting PLO/8 flop decision

[Acesover8s]

4 handed wild .10-.25 PLO8 game. Player to my left is raising the pot preflop 100% of the hands, he slows down a bit on the flop.

Anyway, I'm dealt Ac3cK4 in the SB ($97), Maniac in the BB ($27), UTG limps ($11), Button calls ($29). I call, Maniac raises pot and all come in.

Flop is Ad Tc Kc. Give me top two/nut flush draw, and backdoor low draw. I check, BB bets pot. UTG folds. Button raises pot. What's my move?