A move I make more often than not. Leak, or standard play?

[octaveshift]

If I enter levels 4-5 with t900 or less, I usually play very aggressively to build my stack. This means I either end up with a decent stack for the bubble, or I end getting broke in 5th or 6th place trying to accumulate.

Here is an example. BB was tight-passive, having seen around 4 flops up until this point. Is this standard?

***** Hand History for Game 2218538231 *****
100/200 TourneyTexasHTGameTable (NL) (Tournament 13159978) - Thu Jun 16 23:24:26 EDT 2005
Table Table 14945 (Real Money) -- Seat 8 is the button
Total number of players : 6
Seat 1: Saden (795)
Seat 4: XsoulrebelX (3500)
Seat 6: BorgataAAAA (685)
Seat 7: andersncsu (907)
Seat 8: devo32 (1178)
Seat 9: xyrophobe (935)
xyrophobe posts small blind (50)
Saden posts big blind (100)
** Dealing down cards **
Dealt to xyrophobe [ 4d, 5d ]
XsoulrebelX folds.
BorgataAAAA folds.
andersncsu folds.
devo32 folds.
xyrophobe raises (885) to 935
xyrophobe is all-In.