MCAT prep is part of the program. If you have the 8,8,8 you can opt to take the immunology course. Past student told me its better to just retake the class (if you get into Drexel). 1. you will do a lot better the second time 2. you dont want 2 years to pass before you see the material again.
Also DPMS, is geared towards you going to Drexel if you complete the program. You dont take the MCAT until March/April, so if you did decide to apply to other schools you would be doing it after you finish the program. Unless you already have a good MCAT, which in that case, why not just consider the Drexel IMS program.