Allin semibluffing at 100NL 6max

[Jehi]

No reads on the villain, stats 28/15/2 over 47 hands. I don't usually make plays like this so critisise if this is -EV. Stats on PAH were saying that villain was calling bets on the flop so I decided to check call the flop and see the turn card. On the turn I tried to take the pot down as I weren't sure if villain had anything and if he had I could still outdraw him on the river.

Party Poker No-Limit Hold'em, $ BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG ($124.85)
MP ($84)
CO ($88.15)
Button ($239)
Hero ($98.75)
BB ($150.35)

Preflop: Hero is SB with A[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/club.gif[/img]. Hero posts a blind of $0.50.
<font color="#666666">3 folds</font>, <font color="#CC3333">Button raises to $4</font>, <font color="#CC3333">Hero (poster) raises to $11.5</font>, <font color="#666666">1 fold</font>, Button calls $8.

Flop: ($25) 3[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets $16</font>, Hero calls $16.

Turn: ($57) J[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero calls $70.75 (All-In)

Final Pot: $198.50