Straight on paired board

[Hattifnatt]

No read on Villian who is pretty new to the table but he seems decent. I have a pretty LAG image myself.

Should I fold/reraise on the turn?

Bet river? Fold now after his bet?

Comments on all streets are welcome.

Party Poker No-Limit Hold'em, 4$ BB (6 max, 6 handed) converter

SB ($502.50)
BB ($381.90)
Hero ($604.90)
MP ($236.70)
CO ($218.30)
Button ($393.90)

Preflop: Hero is UTG with A[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/club.gif[/img]. SB posts a blind of $2.
<font color="#CC3333">Hero raises to $16</font>, <font color="#666666">2 folds</font>, Button calls $16, SB (poster) calls $14, <font color="#666666">1 fold</font>.

Flop: ($52) T[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, Hero checks, Button checks.

Turn: ($52) J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets $50</font>, <font color="#CC3333">Button raises to $125</font>, SB folds, Hero calls $75.

River: ($302) 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets $250</font>, Hero...