Yep, it’s super, super competitive, but if you got a full ride to VT I’d assume you are one of those competitive students. You should be super proud of yourself.
To me the only reason to choose UNC over VT is if something about VT puts you off that you don’t think you’d be able to thrive there. It has a very good STEM program (have you checked out the Integrated Science Curriculum?), and I’ve read through a number of student profiles that go on to very good medical schools. So you’d be in great shape, and you can save that money to have less medical school debt, which will be huge.
My son will be a freshman at VT next year, so I’m obviously biased.