Update on Midwestern Status:
Just received an interview invite from Midwestern. The chair emailed me afterwards and said I had a good application and the reason for my waitlist was because I hadnt taken Physics 1 or 2 yet and to let them know when I finished at least Physics 1. I responded that I completely understood and that I wouldnt be finished with Physics 1 until mid-December and if that was the soonest I could be pulled off the interview waitlist. He responded back that he looked over my application and that because I was local and had shown genuine interest in the school (tours, shadowing a student, etc) that they would invite me to interview.
Lesson to learn: it pays off big time to stay involved with the schools you want to attend (touring, interning, preview days) while forming relationships with anyone involved with the school. Admissions want to see that you care about going to their school.