$22: Flush draw + 2nd pair facing allin C/R

[Kipu]

Long time reader, buy my first posted hand (except one in BBV). Go easy on me if this one is obvious--and if it is, I hope I made the right decision at the table.

$22. Villain is 24/12.5/1.16. Table has been playing tight since the bubble burst, usually with raises taking pots down PF. (Only 3 flops, 1 turn & 0 rivers in the 25 hands preceeding this one.)

PokerStars Tournament, Big Blind is t400 with t25 antes (3 handed) Converter on pregopoker.com

Button (t4555)
SB (t5175)
Hero (t3770)

Preflop: Hero is in BB with 9[img]/images/graemlins/heart.gif[/img] J[img]/images/graemlins/diamond.gif[/img]
<font color="gray">Button folds</font>, SB calls t200, Hero checks

Flop: (t875) A[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] (2 players)
SB checks, <font color="red">Hero bets t600</font>, <font color="red">SB raises to t4750 (All-in)</font>, Hero...