If you're pretty sure you'll be able to get an employer to pay off the loans for you, I would jump on that opportunity and keep my own money invested. As long as you're not worried you might feel like you're stuck working for a company that you wouldn't otherwise be working for, i.e., just for the loan repayment, it seems like a no brainer to let your future employer pay off your loans for you. The sooner you can get that $100K working for you, the sooner you'll be able to FIRE.
When my brother was in graduate school he had the cash to pay his tuition, but he decided to take out interest free government guaranteed loans, and he used that money to pay his tuition, instead. For the two years he was in grad school, my brother put his own money into CDs, which he timed to be redeemable just before he graduated and would've normally had to start making payments. OP, you've got a way better deal, though. Good luck!