Overpair Party 15/30

[RunningSixes]

Not really happy with my play on the turn or river...

Party Poker 15/30 Hold'em (8 handed)

Preflop: Hero is BB with K[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/club.gif[/img]. UTG posts a blind of $25. CO posts a blind of $15.
UTG (poster) checks, UTG+1 folds, <font color="CC3333">MP1 raises</font>, MP2 calls, CO (poster) calls, Button folds, SB folds, <font color="CC3333">Hero 3-bets</font>, UTG folds, MP1 calls, MP2 calls, CO calls.

Flop: (14.33 SB) 3[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/spade.gif[/img] <font color="blue">(4 players)</font>
<font color="CC3333">Hero bets</font>, MP1 calls, MP2 calls, CO calls.

Turn: (9.16 BB) 7[img]/images/graemlins/spade.gif[/img] <font color="blue">(4 players)</font>
<font color="CC3333">Hero bets</font>, MP1 calls, MP2 calls, <font color="CC3333">CO raises</font>, Hero calls, MP1 calls, MP2 calls.

CO is loose enough here to have two pair (J7, 75, etc.) Should i reraise to drive other players out to clean up my better two pair outs?

River: (17.16 BB) A[img]/images/graemlins/diamond.gif[/img] <font color="blue">(4 players)</font>
Hero checks, MP1 checks, MP2 checks, <font color="CC3333">CO bets</font>, Hero calls, MP1 calls, MP2 folds.

I called because the pot was so big, but i dont really think i have a 1/20 chance of winning w/ CO betting the river after the ace hit.

Final Pot: 20.16 BB

[Nightwish]

Besides the hands you mentioned, the cutoff could have 64 or could be on a spade draw. I don't think 3-betting is out of the question here, though I'd be leaning towards calling. Regardless of what you do, I wouldn't fold either here or on the river. I've been shown worse hands plenty of times.