5-10 Live, Rivered Trip Aces

[sards]

I have only been at this table for about 2 orbits and I have never played with villain before. He seems solid based only on ~10 hands though. 5-handed game. Effective stacks: $2000.

Villain straddles UTG for $20. Button calls. I raise to $80 in SB with A[img]/images/graemlins/spade.gif[/img]Q[img]/images/graemlins/spade.gif[/img]. BB, villain, and button call.
Flop: 8[img]/images/graemlins/diamond.gif[/img]6[img]/images/graemlins/diamond.gif[/img]5[img]/images/graemlins/heart.gif[/img]. Everyone checks.
Turn: 8[img]/images/graemlins/diamond.gif[/img]6[img]/images/graemlins/diamond.gif[/img]5[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/club.gif[/img]. I lead out for $250, BB folds, villain calls, and button folds.
River: 8[img]/images/graemlins/diamond.gif[/img]6[img]/images/graemlins/diamond.gif[/img]5[img]/images/graemlins/heart.gif[/img]A[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/heart.gif[/img]. I check. Villain thinks for about 30 seconds, then bets $600. Should I call this? Should I have lead river instead? Thoughts on all streets are welcome.