nero, seems like what you've scheduled is fine...biochem is very important and in all honesty, an interesting class anyway...cell and molec. is also a good base to have...
are you a sophomore because at my coll. cell/molec is generally done that year...hence, i had an advanced molec course as a junior which gave me, in my opinion, an UNFAIR advantage on the MCAT (cuz, my prof tried to teach it at a grad school level)...
while genetics will help, i have an odd suggestion for you that helped my buddy...he was very courageous and decided to take histo the fall before thew MCAT, which most of the premeds at my school take senior year so they can place out of it in med school (that's what i'm doing next semester)...but in histo he learned so much about the human body -and I mean serious detail...menstrual cycle on a higher level, hormones, all that... he ended up with a 14 on the bio...
so, if you can take a histo or even a cell phys course (friends in there did well too) it might be a good idea. i say overdo it, better safe than sorry!
of course, class won't make you a good test-taker...that's a given and you'll hear that from everybody...but knowing this stuff on a higher level means it's easier for you to recognize when you see it...meaning less time to think about it...meaning who needs the passages they give you...meaning MCAT success!