50$ live FO: Valuebet river with JJ?

[TimberBee]

Early in a 50$ live tournament. Good players all over, some a little bit too loose. Villain in this hand seems solid and good, but it's very early, and probably the first hand he has played.

10-handed, 100/200, stacks are 20.000

I raise the standard 700 UTG with JJ. Folds around to the BB, who calls.

The flop is 9 [img]/images/graemlins/club.gif[/img]6 [img]/images/graemlins/heart.gif[/img]6 [img]/images/graemlins/diamond.gif[/img].
BB checks, I bet 1000, BB raises to 3000, I call.

Turn 4[img]/images/graemlins/diamond.gif[/img],
check-check

River brings the Q [img]/images/graemlins/heart.gif[/img].
Villain checks. Do I bet? If so, how much? Do you like my turncheck for potcontrol?