1. Biochem
the rest are unnecessary in my opinion. the MCAT will not require direct knowledge of stuff from those classes. It will give you passages based on physio, genetics, and cell bio, but the questions will be very basic. Get it out of your head that the MCAT requires any knowledge. It requires analytical ability. With that said, I included biochemistry, because I think that is somewhat useful for the MCAT. It helps you understand pathways and processes which is a little more important than actual facts.
Also, I did not take microbiology, genetics, cell biology, or physiology AT ALL. My 1st MCAT bio was a 12, and my 2nd was a 13. So that tells you that you could do well without taking those classes.
Undoubtedly people will disagree with me, but I still say that taking those classes is mostly un-related / unhelpful if you want to do well on the MCAT. In other words, I would take my MCAT as soon as my basic pre-reqs were done. You have no special advantage by taking extra classes. It's better to use that time to practice your @$$ off.