Actually, you might want to start in 2/13 in case there are letters and documents that will be required to get the financing. You'll want to make sure that you tell the loan officer that the foreclosure was included as part of the bankruptcy.
FHA wants you to have lots of cash in your pocket at close, not towards the down payment. Minimum is 3.5%.
The 3 year period, I believe, is based on the foreclosure date, not the date sold. Don't bring that up.
The letter will simply state that a condition of the loan is that closing must occur after such date that 3 years passes.