GSDFan,
I think you can certainly manage a puppy. Going to school full time is tougher than working full time, but spending time with a puppy at your feet while you are studying biology or writing an essay, is still quality time.
So pup goes into his den when you are in class and when you are doing something that you cannot watch the puppy carefully. A baby gate will be good too, because you can baby gate the pup in the room with you. Makes it a bit easy to study.
I do not know how you would have more time to be with a puppy if you are working full time at a job.
Still, there is more to school than classes and studying. It is hard to go on an overnighter to a science fair when the pup is at home. And it is really hard to pay for boarding for such stuff.
There is the danger of using the puppy as an buffer and excuse for not going out and doing things with young people. That is your choice. But networking now in college might help you out later.
Generally, we like to tell people to wait until they are more settled to get a puppy. In the next two years, you will move, get a full-time job, possibly have a couple different significant relationships, maybe move a second time and maybe change jobs. It is a lot for most young people and the dog will complicate all of that and it will be hard on the dog.
I think your priorities will be for the dog, and a lot of college students will not have them there. It depends on maturity levels. A lot of college students aren't mature enough to be responsible for any live thing. I think you can do it. I do not know if it is in your best interests or not. I am not worried for the puppy, but for you.