First of all, anything is possible.
Secondly, you do not have to resign your old job first. You will get an IPA letter first (In principle approval). Once you've got that then you can burn your bridges if you want. Always try to leave you last employer properly so you DON'T burn any bridges. You may want to return to them sometime in the future.
SOME PEOPLE TRY TO TURN BACK THEIR ODOMETERS. NOT ME. I WANT PEOPLE TO KNOW WHY I LOOK THIS WAY. I'VE TRAVELED A LONG WAY, AND SOME OF THE ROADS WEREN'T PAVED. ~ Will Rogers