So good, I hardly know what to do.

[imported_anacardo]

Party Poker No-Limit Hold'em, $ BB (10 handed) converter

UTG+1 ($50)
Hero ($66.45)
MP1 ($115.25)
MP2 ($29.15)
MP3 ($42.95)
CO ($48.45)
Button ($67.23)
SB ($59.95)
BB ($15.10)
UTG ($49)

Preflop: Hero is UTG+2 with K[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.25.
<font color="#666666">2 folds</font>, Hero calls $0.50, <font color="#666666">5 folds</font>, SB (poster) completes, BB checks.

Flop: ($1.50) T[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets $1.25</font>, BB calls $1.25, <font color="#CC3333">Hero raises to $4</font>, <font color="#CC3333">SB raises to $8</font>, BB folds, Hero...

SB is very tight, but clearly interested in the hand.
I'm only interested in extraction, of course. What's looks weaker? A push ( the stacks are fairly deep) or a fourth raise? How can I get all the money in the middle?