Classes for Next Year

I just registered for the following classes:

IB Physics HL
IB Chemistry HL
IB Math HL
IB English HL
IB Economics SL
IB Spanish SL

I would like to do something along the lines of BioMedical Engineering/Medicine. I should have plenty of credits if I pass my exams. Are there any thoughts on how difficult these classes are, or if I should request a change before it is too late.

I know several people who are taking those 4 HLs and are doing fine. It all depends on how prepared you think you are for those classes. Are you good at math? Because Physics, Chemistry, and Math (well, obviously) are all math-heavy, especially for the higher level.