Combo hand, made me kind of confused.

[cbloom]

No Limit Hold'em Ring Game (6 max) , 6 players
Blinds : $0.5/$1

Stacks:
UTG : $175.50
MP : $99 (Hero)
CO : $60.10
BTN : $144.50
SB : $101
BB : $133

Pre-flop: (6 players) Hero is MP with A[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/club.gif[/img]
UTG folds, <font color="#cc0000">Hero raises to $4</font>, CO folds, BTN calls, 2 folds.

Flop: 9[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/spade.gif[/img] ($9.5, 2 players)
<font color="#cc0000">Hero bets $7</font>, BTN calls.

Turn: 6[img]/images/graemlins/club.gif[/img] ($23, 2 players)
Hero ...


Villain is a 27/12 multitabler. He's very bad, and in particular he calls down way too light and stacks off with TPNK, so like he's never folding an ace. He also calls cbets too much so he can have a pretty wide range here.

Obv I have a huge hand but I'm not sure of the best move here.