Was I too aggressive with AQo?

[PhatPots]

I don't have any reads. I usually 3 bet with AQo when there are a number of other callers. In this case there was only one. Can someone tell me if this is right? Normally I would just cold call with AQo unless there are number of other ppl calling.

Party Poker 2/4 Hold'em (9 handed) converter

Preflop: Hero is SB with A[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">UTG raises</font>, UTG+1 folds, MP1 folds, MP2 calls, MP3 folds, CO folds, Button folds, <font color="#CC3333">Hero 3-bets</font>, BB folds, <font color="#CC3333">UTG caps</font>, MP2 calls, Hero calls.

Flop: (13 SB) 2[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">UTG bets</font>, MP2 folds, Hero calls.

Turn: (7.50 BB) 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">UTG bets</font>, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">UTG 3-bets</font>, Hero calls.

River: (13.50 BB) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">UTG bets</font>, Hero calls.

Final Pot: 15.50 BB