AK hand, What is my river play?

[grouchie]

Party Poker No-Limit Hold'em, $ Hero (7 handed) converter

MP1 ($54.60)
MP2 ($60.30)
CO ($18.75)
Button ($49.30)
SB ($43.90)
Hero ($55.60)
UTG ($30.40)

Preflop: Hero is BB with A[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/club.gif[/img]. SB posts a blind of $0.25.
<font color="#666666">2 folds</font>, MP2 calls $0.50, CO calls $0.50, <font color="#666666">1 fold</font>, SB (poster) completes, <font color="#CC3333">Hero raises to $2.5</font>, MP2 calls $2.50, CO folds, SB folds.

Flop: ($7) Q[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $5</font>, MP2 calls $5.

Turn: ($17) 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $10</font>, MP2 calls $10.

River: ($37) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero .....</font>

Also, was my turn bet too small? should I have bet the full pot instead?