3/6 AQs, 3-bet the river?

[Sirasoni]

No read on UTG. Only ~60 hands on UTG+1, he seemed a bit passive and semi-loose (24/6/.5 to be exact).

I was having a hard time putting my opponents on a range of hands, and felt that the turn check/raise and cold call was really sketchy. Do I 3-bet the miracle river for value here, or just call down considering the paired board?

Additionally, I also feel the flop and turn may bring up some discussion, so comments on all streets welcome [img]/images/graemlins/smile.gif[/img]

Party Poker 3/6 Hold'em (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is Button with A[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/club.gif[/img].
UTG calls, UTG+1 calls, <font color="#666666">1 fold</font>, MP1 calls, <font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">2 folds</font>, UTG calls, UTG+1 calls, MP1 calls.

Flop: (9.33 SB) 7[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
UTG checks, <font color="#CC3333">UTG+1 bets</font>, MP1 folds, <font color="#CC3333">Hero raises</font>, UTG calls, UTG+1 calls.

Turn: (7.66 BB) 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, UTG+1 checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG raises</font>, UTG+1 calls, Hero calls.

River: (13.66 BB) 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">UTG bets</font>, <font color="#CC3333">UTG+1 raises</font>, Hero... (UTG left to act)

Thanks in advance [img]/images/graemlins/smile.gif[/img]