Overcalling with AA

[PokerBob]

Canterbury 8/16 9 handed
I have not been at the table long. UTG+1 is a complete and utter LAGtard monkey. He's gotta be 70/50/2. He sometimes raises blind. He is a crzy gambooooling Asian dude, and now he is a bit drunk. UTG+2 I don't know anything about, but he looks like a crazy gamboooooling Asian dude too, and his pf play hints at this.

I raise A [img]/images/graemlins/diamond.gif[/img]A [img]/images/graemlins/club.gif[/img] UTG. UTG+1 3-bets, UTG+2 cold-calls 3 bets, everyone else goes away and I make it 4 bets. UTG+1 calls, UTG+2 now becomes random cap guy and caps it at 5 bets, we both call.

Flop 3 ways:
Q [img]/images/graemlins/spade.gif[/img]8 [img]/images/graemlins/spade.gif[/img]2 [img]/images/graemlins/spade.gif[/img]
I bet, both call.

Turn: 3 [img]/images/graemlins/heart.gif[/img]
I bet, both call.

River (12BB): 7 [img]/images/graemlins/heart.gif[/img]
I bet, UTG+1 raises, UTG+2 cold calls 2 bets, wtf do i do here? is it close either way?