Big stack on the bubble

20+2 on Empire. Cobra has made a number of mini raises so far and all the ones shown have been mediocre. Even with that though I'm not sure if this hand is strong enough to push. Thoughts?

***** Hand History for Game 2519012407 *****
300/600 Tourney Texas Hold'em Game Table (NL) (Tournament 14754218) - Thu Aug 11 21:07:15 EDT 2005
Table Table 15006 (Real Money) -- Seat 7 is the button
Total number of players : 4
Seat 1: Trajoutname (210)
Seat 2: Giga_Donk (4455)
Seat 4: nache (1270)
Seat 7: Cobrahunter (2065)
Trajoutname posts small blind (150)
Giga_Donk posts big blind (300)
** Dealing down cards **
Dealt to Giga_Donk [ 9h, Qc ]
nache folds.
Cobrahunter raises (600) to 600
Trajoutname calls (60)
Trajoutname is all-In.
Giga_Donk raises (4155) to 4455
Giga_Donk is all-In.