Typical river bet?

[kapw7]

After a small break I'm back at 1/2 6max clearing the PP bonus.
CO has a VPIP of 60ish and WSD 29%. Nice guy.
Party Poker 1/2 Hold'em (6 max, 6 handed) converter

Preflop: Hero is Button with 5[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, MP calls, CO calls, Hero calls, <font color="#666666">1 fold</font>, BB checks.

Flop: (4.50 SB) T[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
BB checks, MP checks, CO checks, Hero checks.

Turn: (2.25 BB) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
BB checks, MP checks, CO checks, <font color="#CC3333">Hero bets</font>, BB folds, MP folds, CO calls.

River: (4.25 BB) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
CO checks, <font color="#CC3333">Hero bets</font>, CO folds.

Final Pot: 5.25 BB