3/45turbo Stars, Is this line okay, or am I a donkey?

[Augster]

No reads as it's still early. The blind has just gone to 100 this hand. So far, everyone at the table seems weak-tight. But it is a $3 donkament.

PokerStars No-Limit Hold'em Tourney, Big Blind is t100 (7 handed) internettexasholdem.com

Button (t1230)
SB (t2840)
Hero (t1920)
UTG (t1980)
MP1 (t1820)
MP2 (t3895)
CO (t4575)

Preflop: Hero is BB with A[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">5 folds</font>, SB completes, <font color="#CC3333">Hero raises to t400</font>, SB calls t300.

Flop: (t800) 9[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets t100</font>, <font color="#CC3333">Hero raises to t1520</font>


Any and all help is appreciated.