Couple of comments -
BME is a rough road for a pre med. It’s difficult to maintain a high GPA and you don’t get any bonus points for having a hard major in med school applications.
Purdue has a secondary admission process for declaring your major and while straight forward for most, BME is the most difficult because they cap the number of students. Even if you meet the GPA threshold, there isn’t a guarantee you will be accepted into the major. I don’t know if any of the other schools on your list do the same, but I’d do a deep dive. While I love Purdue in many ways, I don’t think they have the same supports for pre-meds as some of the other schools on your list.
Are any of these schools instate for you? Are they all affordable for your family? Med school will be very very expensive so you will need to consider those future costs as well.
If money is no object, my favorites from your list for a pre-med are Michigan and Case.
@Knowsstuff - Do you have an input for this student on BME at Michigan for a pre-med?