AK on dodgy board

[underthesky]

Villain is 29/7/0.5 over 180 hands. Standard? My river bet puts the villain all-in.

$0.5/$1 No Limit Holdem
4 players
Converted at weaktight.com

Stacks:
CO (<font color="#0000cc">$100.00</font>)
BTN (<font color="#0000cc">$45.69</font>)
SB (<font color="#0000cc">$109.45</font>)
BB (<font color="#0000cc">$116.15</font>)

Hero is in CO with A[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/spade.gif[/img]

Pre-flop: ($1.5, 4 players)
<font color="#cc0000">CO raises to $4</font>, BTN calls $4, <font color="#777777">2 folds</font>

Flop: Q[img]/images/graemlins/heart.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] T[img]/images/graemlins/heart.gif[/img] ($9.5, 2 players)
<font color="#cc0000">CO bets $7</font>, BTN calls $7

Turn: A[img]/images/graemlins/heart.gif[/img] ($23.5, 2 players)
<font color="#cc0000">CO bets $18</font>, BTN calls $18

River: 8[img]/images/graemlins/diamond.gif[/img] ($59.5, 2 players)
<font color="#cc0000">CO bets $17</font>