2/4 - semi-deep stacks

[Bigfoot]

Villain has a bit over 700, I cover.

Villain raises to 12 UTG everyone folds, I call in the BB with 5 [img]/images/graemlins/spade.gif[/img]5 [img]/images/graemlins/diamond.gif[/img].

Flop: 5 [img]/images/graemlins/club.gif[/img]2 [img]/images/graemlins/heart.gif[/img]K [img]/images/graemlins/diamond.gif[/img]
I bet 20. Villain calls.

Turn: A [img]/images/graemlins/club.gif[/img]
I check. Villain bets 40. I raise to 120. Villain calls.

River: 8 [img]/images/graemlins/spade.gif[/img]
I bet 240. Villain calls.

I'm just curious if I misplayed this hand. I think that after he calls the turn check-raise villain always has either AA, KK, or AK. The board is so dry I can't see what else he has here. On the river I bet 240 intending to fold to a push.