gutshot SF draw on paired board

[felson]

Villain is 40/15 over 100 hands in prior sessions. I didn't have any notes on him.

Alternate lines for turn/river?

Party Poker No-Limit Hold'em, $ BB (4 handed) internettexasholdem.com

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

<font color="#C00000">Button ($777)</font>
SB ($600)
BB ($1307)
<font color="#C00000">Hero ($1045.15)</font>

Preflop: Hero is UTG with 7[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/spade.gif[/img]. SB posts a blind of $3.
<font color="#CC3333">Hero raises to $21</font>, Button calls $21, <font color="#666666">2 folds</font>.

Flop: ($51) 9[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $49</font>, Button calls $49.

Turn: ($149) 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $140</font>, Button calls $140.

River: ($429) 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, Button calls $567 (All-In), Hero...?