passive or aggressive? overpair, flop is capped by villain

[crippled foe]

Villain has just sat in, no reads.

How would you guys play this hand? All streets in question.

Is the 3-bet okay?

I didn't really want to bet the turn b/c I was afraid of another check raise by him, but I'm think thats too passive.

Ultimate Bet 1/2 Hold'em (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is UTG with K[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img]. MP posts a blind of $0.25.
<font color="#CC3333">Hero raises</font>, <font color="#666666">3 folds</font>, BB calls.

Flop: (5.40 SB) 5[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">BB raises</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#CC3333">BB caps</font>, Hero calls.

Turn: (6.70 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero checks.

River: (6.70 BB) 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets</font>, Hero calls.

Final Pot: 8.70 BB