FTP $75, $25K, BB Resteal on Bubble??

[anuj]

$69+6, 25K guarantee, 460 something started, 46 left, 45 pay, the average is about 25K or something.

I made a resteal about 5 hands ago against one of the table big stacks, and pretty lifeless for about 2 orbits before that.

Full Tilt Poker
No Limit Holdem Tournament
Blinds: t800/t1600
(Ante: t200)
8 players
Converter

Stack sizes:
UTG: t19126
UTG+1: t38034
MP1: t34267
MP2: t10666
CO: t27530
Button: t38011
SB: t13122
Hero: t22065

Pre-flop: (8 players) Hero is BB with K[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/club.gif[/img]
4 folds, <font color="#cc0000">CO raises to t4000</font>, 2 folds, <font color="#cc0000">Hero ...?</font>

Should I shove it in? I don't care if I cash, I want to win.

Hypothetical Question:
Same situation, but you're on the button?
What if there are 55 players left, you're in SB/BB, what do you do?
What if there are 55 players left, and you're on CO/button?