NL $100 against bad LAG

[wtfsvi]

This guy is 45/28/2 after 80 hands. Aggression factor 2 on all three streets. When I'm calling the flop I expect him to check the turn to me if he has nothing (and I expect him to have nothing). And I plan to bet half pot on the turn to push him off his overcards. PA tells me he's check raised twice in his 80 hands, for what that is worth.

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

BB ($47.80)
UTG (villain)/ ($105.45)
MP ($16.25)
Hero ($114.35)
Button ($31.60)
SB ($94.05)

Preflop: Hero is CO with 3[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $0.50.
<font color="#CC3333">UTG (villain)/ raises to $4</font>, <font color="#666666">1 fold</font>, Hero calls $4, <font color="#666666">3 folds</font>.

Flop: ($9.50) 6[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">villain bets $5</font>, Hero calls $5.

Turn: ($19.50) 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
villain checks, Hero...?