A great, great site to go for advice is the www.fredmiranda.com forums. They have tons of info already available that you can search through and on top of that, their buy/sell forum for used gear is highly reputable and you can save 20% off new prices for great, clean and high quality lenses.
Good luck to you! It wasn't until this past semester that I developed much better sleeping/study habits. Trying to be a superstar with 5 hours of sleep is dumb (unless that's enough for you =P .) Actually being a superstar with as much as sleep as you need is much, much smarter.