How to become a pharmacist

I want to go to OSU's pharmacy school (for a BSPS) straight out of high school, but I will need to take a few classes in order to do that:

Biology 113 and 114 Chemistry 121-123 Mathematics 150-152

How long will these classes take and when I do finsh them, will I have made any more progress toward a BSPS than someone who went straight into the BSPS?