3rd Barrell 5/10 NL FTP??

[KissANDCatch]

Playing 5/10 on FTP when the following hand came up. Villain is 36/6/.42 over 75 hands. He is clearly not very good, but I don't have any specific reads on what hands he will call multiple bets with.

I decide to double barrel the turn when the ace hits, but what is your play on this river? What hands/hand ranges do you put him on to justify the decision?

Thanks!

Full Tilt No-Limit Hold'em, $10 BB (6 handed) Full Tilt Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero ($1144)
MP ($1000)
CO ($547)
Button ($1079)
SB ($1005)
BB ($1600.65)

Preflop: Hero is UTG with 9[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/spade.gif[/img].
<font color="#CC3333">Hero raises to $35</font>, <font color="#666666">3 folds</font>, BB calls $25.

Flop: ($75) 5[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets $60</font>, BB calls $60.

Turn: ($195) A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets $180</font>, BB calls $180.

River: ($555) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, Hero ???.