Wait until you get to campus.
Many schools have discount programs with vendors like Apple or Dell. Dell deals are acheiveable only through your school and you can look up if your school works with apple
Here.
Wait until your at school, get an idea of what common setups are amongst peers, and what if anything is being recomended by your major. In many cases, a dept/major has a pre-arranged deal with at least one vendor for a desktop or laptop with all the software you'll need in that majors class's at a discounted price that can be calculated in finacial aid with lower payments if you take the deal through the school.