Steal out of the BB - too early?

[DasLeben]

Normally this is a very standard (and effective) move for me, but should I try this in level 4? Or should I wait until later levels where the blinds are worth it more?

Party Poker No-Limit Hold'em Tourney, Big Blind is t100 (5 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Button (t3775)
SB (t690)
Hero (t1020)
UTG (t755)
MP (t1760)

Preflop: Hero is BB with A/images/graemlins/heart.gif, 2/images/graemlins/heart.gif.
<font color="#666666">3 folds</font>, SB calls t50, <font color="red">Hero raises t920 (all-in)</font>

[NYCNative]

I like it.

[jgunnip]

I think the case more often than not is that weak SB has a average-above average holding and is just looking to see a cheap flop. As always, reads and table images should always be taken into consideration.