Disclaimer: I am NOT a coach!;
Note also that I'm not a tournament expert.
However, when the effective stack is < 10BB I treat everything as a shove.
To do a proper ICM it is necessary to know the payout structure, and all the other stacks.
The reason is that (for example) if you are on the bubble (it sounds like there are 5 players left) and one of the players is very short this is a clear fold.
For example, I gave the 2 players that folded before the button and the SB stacks of 25000 and assigned the tournament a standard 0.5, 0.3, 0.2 payout structure.
Treating BU's minraise a shove means your shove is just calling a shove, because under those circumstances BU will rarely minraise/fold (and if you know they can, then you MUST shove).
See:
HoldemResources Nash Results
Here is the calculation if the next BB is very short:
HoldemResources Nash Results
Once you follow that link, you can re-do the calculation with the correct stack sizes and see for yourself.
Note that HoldemResources has at program you can find on our Poker Tools page.
Best of luck,
--VS