Game is late at night people are VERY deep. Smallest stack is hero with about 360 bb's. ALOT off loose calls and 3-bets pre, basicly a dream plo table with a couple off maniacs combined with DEEEP stacks.

A couple off callers, cutoff raises to 30(Good NLHE-REG who is tagish but now is loose since he is stuck+steamed)
Hero 3-bets to 100 with KsQcTc9s(I have super nitty image and only hand that is gonna 4-bet me is AAxx) Also I have pos and against wide calling ranges this hand seems really nice. At the same time I could just flat, is my 3-bet bad?

5 callers so pot is 6 way with 600 in middle.

Flop 3s6c7s, couple off checks, then a stuck maniac decides to donk to 320 and the orginial raiser goes all in.

Hero has exactly 790 left? I would put the maniac on a WIDE range here but the NLHE reg basicly one hand and thats 45xx. He might do the same with a set but I highly doubt it since the way he was acting. Perhaps they both block each other. I still have 3 more people to worry about behind... and IF I missread and the maniac has a set himself or god forbid A high fd I am kinda screwed. There is ofc the possibility somebody checked with Ahigh fd before or will call with a set themselves.