oh man.. thats a bit tight for the AFSP checks. Hopefully you have filled out the several page questionaire online, and paid the money. Also you need to get fingerprints done when told to do so during your application.
You CANNOT go via a visa waiver as the flightschool cannot and will not allow you to start the sim part of the training.
Cant you see if there are any other sims for the type outside of the US?