6 max Tribeca.

UTG folds, I raise to 8$ w [5d] (Stack 197$)

81/4 Superdonk in Cutoff calls. Don't have a very good read yet (this hand helped on that!) but have seen him draw to gutshots, overplaying any pair and in general just donking away money (he's currently double stacked though). He's passive, hardly ever bets except full pot on river sometimes if checked to...

Smallblind AND bigblind calls as well. I plan to 'set it or forget it', however:

Flop 32$ - [4c][3s]. Both blinds check. I bet 24$, Mr Donk calls, both blinds fold.

Turn 80$ - . I bet 55$ hoping he'll throw away a draw or any overcards to the flop (lower than a king). Is this a major mistake? Should I check fold here? Or did I do something wrong to end up in this situation?

Anyway he calls. River is the . I check and plan to fold to any bet.