The issue you mentioned of having no idea what to do if AA school doesn't work out absolutely applies to me. I don't want to spend 8 - 10 years in medical school, dentistry is too boring and monotonous to me, and pharmacy is about like dentistry (with a massive oversupply of providers in addition).
That's what sucks about pursuing one of the "Higher Level" careers in healthcare: you put all your eggs into that one basket, you don't have any alternatives in mind because you can't think of any similarly fulfilling careers, and so when your pursuit of that all-or-nothing healthcare career falls flat, you're more or less left stranded like a Boy Scout who got lost in the woods (or something like that, LOL).
I definitely realize that if it doesn't work out this time (which would be my second time applying), I really don't have any business hanging around for a third year when I could've spent the cumulation of those years pursuing something else, even if it's a 2-year program to become a sonographer or radiation therapist. I guess I'll find out really soon if that's what I'm meant to do...