KQo in the SB, overplayed?

[ScottTheFish]

Party Poker 2/4 Hold'em (6 handed) converter

MP is a very weak cs type ~50% VPIP
CO is a respected 2+2er, he knew I was a 2+2er as well, FWIW.

Preflop: Hero is SB with Q[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, MP calls, <font color="#CC3333">CO (2+2er) raises</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">1 fold</font>, MP folds, CO :#A500AF(2+2er)/ calls.

Normally I wouldn't 3-bet this, obviously, btu tI though there was a good chance he was isolating the weak limper, and would raise with a wide range. Good time to play back or LAGgy chip spewery?

Flop: (8 SB) 3[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, 2+2er calls.

Flopped the OESD, rest of the hand plays itself.

Turn: (5 BB) 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">2+2er raises</font>, Hero calls.

River: (9 BB) 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, planning to fold to a bet.