99 - Overpair on monotone board vs. LAG

[NIX]

CO was LAGish at 36/19/2.3 over 47 hands. With how agro he is, I figure his range is wide since he could be stealing. On the flop, I figure he's aggressive enough to be raising a draw as well as a made hand (which includes a bunch of hands I am beating and some with tons of outs). Being in position, does this look ok on a reasonably safe turn card or should I be more apt to 3bet the flop and go from there despite there being a lot of things he can represent depending on the turn?

Full Tilt, 1/2 Full Ring

Hero is on the Button with 9[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/diamond.gif[/img]

Preflop, 9 Players: 5 folds, <font color="red"> CO raises </font>, <font color="red">Hero 3bets</font>, 2 folds, CO calls.

Flop, 7.5SB: 8[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/club.gif[/img]
CO checks,<font color="red"> Hero bets</font>,<font color="red"> CO raises</font>, Hero calls.

Turn, 5.75BB: Q[img]/images/graemlins/diamond.gif[/img]
<font color="red">CO bets</font> , <font color="red">Hero raises</font>, CO calls.

River, 9.75BB: A[img]/images/graemlins/heart.gif[/img]
CO checks, Hero checks.