AA flopped set...when to let it go?

[midwestkc]

I'm thinking I fold after the turn...All the flop betting was crazy, but felt like I had alot of outs to fill up...anyways, what do you think?

Party Poker 0.50/1 Hold'em (9 handed) FTR converter on zerodivide.cx

Preflop: Hero is Button with A[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, MP1 calls, MP2 calls, <font color="#666666">1 fold</font>, <font color="#CC3333">CO raises</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">2 folds</font>, UTG+1 folds, MP1 calls, MP2 calls, CO calls.

Flop: (14.50 SB) A[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
MP1 checks, MP2 checks, <font color="#CC3333">CO bets</font>, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">MP1 3-bets</font>, MP2 folds, <font color="#CC3333">CO caps</font>, Hero calls, MP1 calls.

Turn: (13.25 BB) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
MP1 checks, <font color="#CC3333">CO bets</font>, Hero calls, MP1 folds.

River: (15.25 BB) 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">CO bets</font>, Hero folds.

Final Pot: 16.25 BB