FPS checkraise?

[unimproved]

Just a brief one. Villain is 23/7/1.

Party Poker 5/10 Hold'em (9 handed) converter

Preflop: Hero is SB with A[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/club.gif[/img].
<font color="#666666">2 folds</font>, MP1 calls, <font color="#666666">1 fold</font>, MP3 calls, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises</font>, BB calls, MP1 calls, MP3 calls.

Flop: (8 SB) 5[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets</font>, BB calls, MP1 folds, MP3 folds.

Turn: (5 BB) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, BB calls.

River: (7 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">BB bets</font>, <font color="#CC3333">Hero raises</font>, BB calls.

Final Pot: 11 BB


I'm banking on a couple of things with the river c/r: one, that Villain has one of the other broadway diamonds (I assume he has or he'd have released his hand on the turn), two, that he reads the river check as meaning that I cannot hold the nuts, and will bet his second- or third- nut flush for value (i.e., he is not a thinking enough player to check behind as I will only call with hands that beat him).

Thoughts?

*awaits several one-word responses saying 'bet'*