If you get A's in all of your pre-med classes and those are the only science courses you take, you're fine. Those are the only ones med schools care about if you're a non-science major. So it won't look bad if those are your only science courses; I know plenty of people who only did the required pre-med courses (keep in mind, some med schools require or recommend a little more than the standard prereqs, like a semester of biochem, or calculus/statistics, etc). I highly doubt it would significantly boost your app if you have compsci classes (unless a med school recommends it), but the important thing here is to take whatever you're interested in while you're in college and do well in it. Check out the MSAR for individual med-school prereqs and recommendations on premed coursework.
This is good advice. Even if it doesn't help you get in to medical school - those upper level science classes can be a godsend. At my school, everyone is required to take biochem and genetics prior to attending, but I know those of us with a background in things like physiology, neurobio, microbiology, etc. are finding our course material to be much more manageable than those who didn't take the courses. Personally, I would recommend biochem, followed by genetics, followed by neuro, followed by physiology.
