$100NL AQo River OOP

[bobbyi]

I don't know the opponent here. I'm looking for a river plan. Check or bet? If you check, what's the largest bet you are calling (the villain has exactly a PSB left)? If you bet, how much and do you call a raise?

Stack sizes:
UTG: $100
CO: $52.13
Button: $101
SB: $97.27
Hero: $116.35

Pre-flop: (5 players) Hero is BB with Q[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/diamond.gif[/img]
2 folds, Button calls, SB calls, <font color="#cc0000">Hero raises to $5</font>, Button calls, SB folds.

Flop: Q[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/heart.gif[/img] ($11, 2 players)
<font color="#cc0000">Hero bets $9</font>, Button calls.

Turn: 5[img]/images/graemlins/spade.gif[/img] ($29, 2 players)
<font color="#cc0000">Hero bets $20</font>, Button calls.

River: 9[img]/images/graemlins/diamond.gif[/img] ($69, 2 players)