L.C.
2.5 years of misery for 2x as much salary? Please... make the commute.
My husband commutes farther than that for his job every day. Some days the commute is well over 2 hours. There have been days when he has gone back to the office to work to wait out the traffic.
Make the commute during a time when there is less traffic. Schedule your classes around the traffic or schedule them all on the same day so you don't have to go in as often. If you can't, then go early and leave late. You can sit in the library and study or write papers or whatever. It will be a pain, but it's only 2.5 years and the time will fly by.
LBC