You can always commit to the master's program and withdraw if you get accepted to Drexel. You'll lose the deposit fees but at least you'll have a backup in case things don't work out. Honestly, as a current reapp, so much money has gone down the drain. I just try to look forward and think about the potential money I can make lol
ALSO i would highly consider only doing an SMP or master's if your GPA was low. If you do have to apply again you want to make sure you spend the next gap year correcting the weakness of your app