I believe the earliest bus is the 7:30am bus.
We were on that, and it first stopped at WL to let people out, then to Contemporary, then to the MK, then was continuing on to Poly and GF.
It will only stop where people actually need to go that morning. I would say if you want to get there for 730, grab a cab.
We grabbed a cab to the GF for a breakfast one day and it was $15 plus tip, and there was a bit of traffic. At that time of the morning it might only run about $10 to the poly.