Well, check out those links provided by @ucbalumnus. Med school debt is burdensome enough as it is, without tacking on another $65,000. And don’t forget that $65K will become much more than that by the time you pay it off, due to interest charges.
The other thing is, UT Austin is attractive to you for its academic advantage in engineering, but what happens if you struggle with the engineering workload, and end up switching majors? There goes much of the reason why you enrolled at Texas, and the added debt starts to look more like a mistake. I understand you’re confident in your ability when you put your mind to something, and that’s a great thing, but college is a different ballgame, especially engineering.
UA is the safer option, in my opinion. If you can figure out a course of study at UA that matches your aptitudes and goals very well, while protecting for GPA/MCAT, I’m sure you’d be happy with your overall academic experience.