And don't try to pull off any "cool" acts of airmanship in front of your peers. You can't get away with as much in airplanes post 9/11.

I got my ppl at 17, CFI at 19, and instructed all through college. You could easily be beyond 1000 hours by the time you graduate and have some spare cash to spend on those things college students like. Find an FBO to train at that hires their own trainees and has multi engine training. Get a job pumping gas while training to defer the cost if you can.