TS $5k ME hand vs g-p

[JSchnett]

This is from day 1 of the TS $5k. blinds are 150/300/50 and g-p is new to the table and I don't know who he is. I think somebody told me he was a good LAG and thats all I had to go off of.

g-p is utg with around 25k probably I'm not sure because he sucks at stacking chips, I cover with around 80k.

He opens utg to 1k and its folded to me on the button with Q[img]/images/graemlins/club.gif[/img]Q[img]/images/graemlins/heart.gif[/img]. I reraise to 3200 and he calls after some thought.

Flop is 3[img]/images/graemlins/diamond.gif[/img]4[img]/images/graemlins/diamond.gif[/img]5[img]/images/graemlins/club.gif[/img]
He checks.
I bet 5500.
He calls.

Turn A [img]/images/graemlins/club.gif[/img]
He checks.
I check.

River 5 [img]/images/graemlins/spade.gif[/img]
He bets the rest of his remaining 7 blue (1k) chips and has ~10k behind.
I...?