TP+OESD vs. aggression; turn play

[Clinger]

Live 2/4 game at the Taj In AC. 10 handed.

Button, SB, and MP1 are all lags. CO is a tag. The rest of the table has been weak and loose. CO and SB both have *huge* mountains of chips, CO because hes the best player at the table; SB because he does things like make straight flushes after calling UTG with K [img]/images/graemlins/diamond.gif[/img] 7 [img]/images/graemlins/spade.gif[/img].

I don't have much of a read on button other than he likes to see lots of flops.

Hero is BB with J [img]/images/graemlins/heart.gif[/img] 7 [img]/images/graemlins/diamond.gif[/img]

Preflop: 3 folds, MP1 calls, 2 folds, CO calls, Button calls, SB calls, Hero checks.

Flop: (5 players, 5 SB) 4 [img]/images/graemlins/spade.gif[/img] 5 [img]/images/graemlins/diamond.gif[/img] 6 [img]/images/graemlins/heart.gif[/img]
SB checks, <font color="red"> Hero bets</font>, MP1 calls, CO calls, <font color="red"> Button raises</font>, SB calls, Hero calls, MP1 calls, CO calls.

Turn: (5 players, 7.5 BB) J [img]/images/graemlins/club.gif[/img]
SB checks, Hero...?

Most of the weak players weren't involved in this hand, so I wasn't sure what to do here.