Career Changer Looking For Advice: Do I need a postbacc?

I'm a 23-year-old looking to make a career change into medicine and would love some guidance. I graduated from Embry-Riddle in Spring 2025 and have a BS in Aeronautics w/ a minor in Finance. uGPA: 3.31. I've taken two science classes, Psychology (A) and Introductory Physics (C).

Since I've started pursuing medicine I've done what I can to build experience in healthcare (started volunteering at a local hospital twice a week and have arranged 3 shadowing opportunities so far), but it's unclear to me if I'm competitive for a program at Goucher, Bryn Mawr, JHU, etc. My GPA is way below the median, but I think I have an interesting story, and I hold FAA Commercial Pilot, Flight Instructor, and Ground Instructor certificates.

With the goal being to get into medical school, does attending a post-bacc give me a better change than doing the pre-med prereqs at a state school? If I do need a postbacc, do I shoot for one of the highly ranked programs? How much weight do admissions counselors give to factors beyond GPA and healthcare experience? Any other advice is greatly appreciated!