($33) 99 - Reasonable or FPS?

[SonnyJay]

1st hand of tourney, no reads. I figured this was a pretty good way to represent the A effectively and cheaply, but I don't really have a plan if I get called. I've been experimenting with this play in similar situations recently.

Should I have bet the flop? Should I have raised more? Should I not be getting involved on this flop at all? Donkish idea to begin with?

Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (10 handed) FTR converter on zerodivide.cx

UTG+1 (t800)
UTG+2 (t800)
MP1 (t800)
MP2 (t800)
MP3 (t800)
CO (t800)
Button (t800)
SB (t800)
Hero (t800)
UTG (t800)

Preflop: Hero is BB with 9[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/club.gif[/img].
1 fold, UTG+1 calls t15, 5 folds, Button raises to t70, 1 fold, Hero calls t55, UTG+1 folds.

Flop: (t165) A[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/spade.gif[/img] (2 players)
Hero checks, Button bets t75, Hero raises to t150

-SonnyJay