Good spot for a bluff? (50 NL)

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Villain is playing 19/9 after about 35 hands. Seems ok. Haven't previously tangled with him or seen him do anything of interest.

I check the flop as it doesn't seem very good to fire on. On the turn my gutshot becomes an oesd. I raise because I think villain's lead can be a lot of marginal hands, and because the implied odds of calling are poor (the double flush draw means my outs are not clean, and if I hit a 9 it will put a 4-straight on the board.)

What do you think of a river bluff?

PokerStars No-Limit Hold'em, $0.50 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

<font color="#C00000">Hero ($52)</font>
SB ($79.75)
<font color="#C00000">BB ($77.05)</font>
UTG ($43.25)
MP ($50)

Preflop: Hero is Button with Q[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $2</font>, <font color="#666666">1 fold</font>, BB calls $1.50.

Flop: ($4.25) 8[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero checks.

Turn: ($4.25) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets $3</font>, <font color="#CC3333">Hero raises to $10</font>, BB calls $7.

River: ($24.25) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks