I'd wait to get the most up-to-date MB after you have access to the student discount. I'd doubt you'll have any pressing need for a MBP and won't really notice the difference.
This will only cost you only half your money. 3 years in, the newest MBs will be better/faster/stronger than the current MBPs. At that point you could upgrade to a new machine that will still be decent a year or two out of college, have a better machine than you would have had, and will have spent the same amount of money.
This will only cost you only half your money. 3 years in, the newest MBs will be better/faster/stronger than the current MBPs. At that point you could upgrade to a new machine that will still be decent a year or two out of college, have a better machine than you would have had, and will have spent the same amount of money.