Undergraduate Classes for those interested in medical school

At my school, there is a dual enrollment program in which I can take college level courses that count towards my years of college. I am interested in applying for a combined medical program (most likely 7 years). I am aware that the credits I earn throughout this dual enrollment will not all be accepted or transferred. This being said, however, I would like for those who are experienced or have already been through this process to give me a list of the top picks or recommendations of classes I should take through this dual enrollment program.