$20+2: Too aggressive against passive player?

[danger_mouse]

SB is fairly tight and too passive unless he has a hand. I'd already seen him min bet/min bet/fold in previous hands. My image up until this point is very tight, but highly aggressive. I've only shown down good hands.

FYI. I put the SB on 98s, 22, 33,55,66,77 or A8 after his minbet on the flop.

Comment on all streets please. My feeling is that my read of the SB, plus the very scary board makes this a good play. However, I worry that I might be playing too aggro here. I also think it might have been better to raise the turn.

PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (7 handed) converter

MP2 (t2715)
Hero (t2020)
Button (t1165)
SB (t1705)
BB (t1435)
UTG (t3125)
MP1 (t1335)

Preflop: Hero is CO with A[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to t450</font>, <font color="#666666">1 fold</font>, SB calls t375, <font color="#666666">1 fold</font>.

Flop: (t1050) 4[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets t150</font>, Hero calls t150.

Turn: (t1350) T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets t150</font>, Hero calls t150.



River: (t1650) 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets t1270 (All-In)</font>,

Final Pot: t2920