I’m currently in the same boat, still trying to decide. I’m leaning on finding a happy medium by taking 6-12months off to pay off a good amount, and then return. But I’m still not sure.
If your graduate degree will guarantee you a high paying job, then it might be worth deferring your undergrad loans, then just tackling grad school, then paying off everything later. However, not all lone can be deferred, and your ability to defer may depend on full time or part time status. Look into that. But otherwise, or if it gives you a lot of anxiety, maybe either pay off all your loans ASAP (save up NOW, have a job lined up ASAP, live with your parents, work a little more, etc) or at least pay a portion of your loans(maybe about 25%) before going back.
I agree with Pat that tuition/loans in this country, for this generation is outrageous, unfair, and cruel. Please, vote and get all your friends to vote next June for the primaries. We need candidates that want to fix this (aka, NOT republicans)