[Homerhomer]

Hi Robert and welcome to the forum.
Living in an apartment is not a problem as long as you are able to provide the dog with walks and playing time in the park.
As far as expenses go, well it could get pretty expensive. Perhaps someone else could help you with detailed pricing of everything but just to give you something to think about try to imagine not only the costs of food but also:
training classes, treats, accessories (collars, leashes, toys, bones etc) crate, scheduled and unscheduled vet bills (these could go into thousands), insurance.... I am probably missing something.
Also sometime soon after you are out of school your schedule will probably change. Would you then be able to give the dog as much attention as the dog requires after 8 or 10 hours work day? Don't take me wrong, I am not trying to discourage you, I am just saying that dog ownership is time, money and energy consuming ( and I love every minute of it).