AKs with QQ on board

[pelerin]

Villain was 44/7/0.7 from 44 hands, he wasn't going to SD much and seemed an easy semi-bluff target.

PokerStars 0.50/1.00 Hold'em (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is CO with A[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">4 folds</font>, MP3 calls, <font color="#CC3333">Hero raises</font>, <font color="#666666">3 folds</font>, MP3 calls.

Flop: (5.50 SB) Q[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
MP3 checks, <font color="#CC3333">Hero bets</font>, MP3 calls.

Turn: (3.75 BB) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
MP3 checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">MP3 raises</font>, Hero calls.

River: (7.75 BB) A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP3 bets</font>, Hero ...?

Was it ok to bet this slightly scary turn to get villain to fold stuff like Ax Kx or small PP?
Should I have called his turn CR as it seemed likely he had a Q in his hand and at this point I was beat? I had plenty of outs but so did he.
Does the river Ace make it worth calling?
(first hand post so go easy on me [img]/images/graemlins/smile.gif[/img] )