J7 suited - keep fishin?

Party 2/4 (9 players) The BB and UTG are typical, looser than optimal but not calling stations. CO has $4.50 in front of him.

I am in SB with J [img]/images/graemlins/club.gif[/img] 7 [img]/images/graemlins/club.gif[/img]
UTG calls, 4 players fold, CO calls, button folds, I complete, BB checks.

Flop : 10 [img]/images/graemlins/club.gif[/img] 5 [img]/images/graemlins/diamond.gif[/img] 8 [img]/images/graemlins/club.gif[/img] (4 players, 4 SB)
I bet, BB calls, UTG calls, CO calls

Turn: 9 [img]/images/graemlins/spade.gif[/img] (4 players, 3.75 BB)
I bet, BB raises, UTG 3-bets, (CO calls for his last .50), I....