5 diamond WPT - shortstaked (5xBB) UTG, whats your push range?

[Benholio]

The subject says it all. Say you have T4000 after posting 100 ante, and the pot has T2000 (400/800 blinds). You are UTG, the table is 10-handed, and its the first hand of day #2. What does it take for you to push here? Also, there are ~300 players remaining and 100 make the money, so its not anywhere near the bubble yet.

Also, assuming you don't push, are you playing any BB even if its multi-way? (T3200 after posting)

Here to sweat a buddy who just barely survived day 1, and will be starting day 2 with this size stack (position unknown as of yet, of course).