Don't set yourself up for failure from day one by shooting in all directions. If pharmacy is your passion then try to weave it into all your activities. Always remember, Web2.0 entrepreneurship accounts for 99% of online buzz but less than 30% of actual investment activity. In fact, biotech is currently the largest investment and M&A sector if memory serves from the last PWC Moneytree report. If you like coding then by all means code, but don't feel like the only possible entrepreneurial experience comes from hacking websites.
Disclaimer: I am not a biotech guy, nor am I saying that Web2.0 ventures aren't a good choice. They are just not the only choice.
At the risk of breaking some kind of HN rule, I have a bit more info on how to achieve such alignment on an old blog post: http://bit.ly/hJmCEQ
It will be very hard to reconcile school, hobby and actual entrepreneurship when they are all in diverging areas (and "coding" has very little to do with entrepreneurship). My advise would be to find better alignment in your activities. Otherwise you will end up doing all three just well enough to fail.
For example, you could do an internship in a bioinformatics start-up. Learn about entrepreneurship, network and still get to practice your interests/skills - all in one shot. Not everything has to be about Web2.0...