Easy bet/fold on the river?

[NSchandler]

Among my biggest leaks is a failure to bet/fold the river often enough. I've been looking for spots to bet/fold, and this one seemed like a good spot for it. Agreed?

Villain is fish - 62/12/0.65.

Question: Assuming this line is best, would anything change if villain were trickier/more aggressive?

Villain open-raises in MP2. Hero 3-bets with A[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/heart.gif[/img], only villain calls.

Flop [T[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/diamond.gif[/img]]. Villain checks, hero bets, villain calls.

Turn [A[img]/images/graemlins/diamond.gif[/img]]. Villain checks, hero bets, villain calls.

River [J[img]/images/graemlins/heart.gif[/img]]. Villain checks, hero bets, planning to fold to a raise.