NL25: Playing a strong draw correctly

[Specialwon]

I got a lot of help with these kinds of hands recently from the forum and I've reread the section in NLHTAP. But, I still don't feel like I have my head totally around the concepts involved, so I'd like to do a street by street with this hand from today.

Questions:

a) pf ok?
b) how much to bet the flop?

Poker Room skin
No Limit Holdem Ring game
Blinds: $0.15/$0.25
10 players
Converter

Stack sizes:
UTG: $23.90
UTG+1: $24.75
UTG+2: $27.25
MP1: $19.90
MP2: $37.40
MP3: $24.50
CO: $2.90
Button: $65.50
SB: $38.95
Hero: $25

Pre-flop: (10 players) Hero is BB with 7[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/spade.gif[/img]
4 folds, MP2 calls, 2 folds, Button calls, SB calls, Hero checks.

Flop: 9[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/spade.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] ($1, 4 players)
SB checks, <font color="#cc0000">Hero ???</font>