I'd be assigning villain a weak range on the flop since he's shown a tendency to donk out before i think he has a bunch of 1 pair hands and the occasional set or 2pair.

Then when he checks the turn i think he has a very weak range a tonne of 6x 8x because we seen him go bonkers with TPNK before i'd assume he'd be trying to build a pot with top pair or better. So i defo would have bet the turn just because we have loads of equity and can build a pot for when we hit. When he check-jams though he i'd assign him a range of top pair or better.

Even though we have loads of equity i don't think we want to play for stacks in marginal situations vs this guy when he's playing so bad post flop, we will have plenty of opportunities to get it in when we have this guy crushed, when he decides to donk shove TPNK for example.