good spot for river c/r?

[Hoopster81]

10/20 6-max

Villain is 30/18/3 over 70 hands. This was from awhile ago, so I can't remember any history and doubt there was any.

Hero: $2100
Villain: $2800

UTG folds, Hero raises A:[img]/images/graemlins/diamond.gif[/img]J[img]/images/graemlins/spade.gif[/img] to $70, CO folds, Villain calls, blinds fold.

Flop ($170) A[img]/images/graemlins/spade.gif[/img]7[img]/images/graemlins/heart.gif[/img]8[img]/images/graemlins/heart.gif[/img]

Hero bets $140, Villaiin calls

Turn ($450) 3[img]/images/graemlins/club.gif[/img]

Hero bets $385, Villain calls

River ($1220) J[img]/images/graemlins/club.gif[/img]

Hero checks... (has $1550 behind)

or do you put him on Ax and think I am losing value?