If you get your loans refinanced to 2.5%, then what to do depends on how much of your time your job eats up. I personally tend to follow the advice that debt under 5% is actually an asset, in that it frees you to invest your spare cash in something that will give you a higher return than paying off a low-interest loan. I mean, if your loans are at 2.5% and you can earn 10% by investing in an index fund, why prioritize paying off your loans?
I still have a smidgen of student loans despite being almost a decade out of law school because instead of paying them off, I bought two rental properties and a home with a rental unit in it. That paid off a lot better than throwing my spare cash at student loans.
That said, my loans were dramatically lower than yours. Having massive loans with $X minimum payment crimps your ability to get mortgages, because it messes with your debt-to-income ratio. But you may not even have time to become a landlord of multiple properties, so it might make more sense to just buy, reasonably close to your work, a small duplex or a home with something you can rent out (like a mother-in-law suite or a spare room you can put on Air Bnb), and then park the rest of your spare cash long term in an index fund. Meanwhile, pay the minimum on your loans or the minimum plus, say, $100 or whatever you feel you can spare. You'll end up with more money 10 years from now that way than you would from throwing everything you can at 2.5% loans.