Also not sure if some people realize the equipment is trucked out ahead of time. There is no luggage checking or loading.
There is luggage loading at every stage...hence if you just load up on campus and go...you eliminate unloading/loading at NJ airport...then unloading/loading at PA airport.
And no, you just don't "take off" whenever you want...as many times, even at small airports, charter flights get delayed too.
Busing straight there will be a quicker trip than going from campus to an airport then to another airport to another group of buses, etc...