Anyone bet this river?

[Superfluous Man]

I've been playing great and I'm in good shape up to this point. Average is about T15000. This is the 'stars 20k guaranteed $11R. My read on the villain is that he's pretty tight and fairly aggro.

PokerStars No-Limit Hold'em Tourney, Big Blind is t600 (9 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

Button (t8110)
SB (t27815)
<font color="#C00000">BB <font color="#A500AF">(Villain)</font> (t39645)</font>
UTG (t23810)
UTG+1 (t21940)
MP1 (t11490)
MP2 (t1620)
<font color="#C00000">Hero (t28370)</font>
CO (t34533)

Preflop: Hero is MP3 with J[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/club.gif[/img].
<font color="#666666">4 folds</font>, <font color="#CC3333">Hero raises to t1800</font>, <font color="#666666">2 folds</font>, SB calls t1500, BB <font color="#A500AF">(Villain)</font> calls t1200.

Flop: (t4900) K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Villain bets t1200</font>, <font color="#CC3333">Hero raises to t4800</font>, SB folds, Villain calls t3600.

Turn: (t14500) 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Villain checks, <font color="#CC3333">Hero bets t12600</font>, Villain calls t12600.

River: (t39700) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Villain checks, Hero ???

Ignoring the loose raise (I like to splash around when I get a big stack and see if anyone plays back/see if I hit something big), what do you do here? Is this a value bet situation on the river? Does checking behind make you Hellmuthian? Did I misplay this on other streets? Was my thinking all wrong here?

Edit: oops, screwed up copying and pasting