I can't tell where the hills are from the google map but it looks like there are TONS of alternate routes. I would try and find something that does not have much traffic or at least has slow moving traffic or bike lanes. Try cutting through places that cars can not go like big apartment complexes, pedestrian bridges, ect... It seems that the route you have picked is the same route that a car driver might choose. Change your thinking. Find residential neighborhoods to ride through.

Even if your alternate route is a little out of the way it beets sitting on campus for an extra few hours a day! Also, just buy an additional grill so you don't have to lug it to and from school everyday!