If you are not accepted to the BS/MD program, do you know whether you will be accepted as a normal undergraduate student?
As I understand it, BS/MD programs are exceptionally competitive for admissions. I do not understand how anyone would be accepted to these programs unless both the student and the admissions office were very, very confident that they were going to want to stay on the MD track (assuming that they can handle the academics).
You have some experience in shadowing doctors of various kinds. Whether your amount of experience in a medical environment is sufficient I am not sure. The people I know who were accepted to medical related graduate programs (master’s, PA, DVM, biomedical PhD) all had vastly more related experience, and very good experience, but were applying after getting a bachelor’s degree.
You need to budget for a full 8 years of university if you want to keep open the option of ever attending medical school. Given how much medical experience you have, to me it looks like you do want to keep this option open and budget accordingly.
I am concerned that your safety and target schools are all out of state public schools. I do not understand why someone who is planning on an 8 year plan would spend extra to attend university out of state, even when the out of state public university is just as good as your more affordable in-state options.
In terms of the private schools on your list (BU, Case Western) you (or your parents) should run the NPC and make sure that they are likely to fit into a realistic budget that handles a full 8 years of university.
I think that you need to make sure that your in-state public universities will accept you as a regular undergraduate student if you are not accepted to the BS/MD program.