First, Congrats!
Second, Luckily 476 is more or less a straight shot between Scranton and Philly. The only real city between the two is Allentown, it's a bit closer to Philly than Scranton but it's close to half way. However both of you will most likely have over an hour commute every day. Him probably more (a lot more) due to the 476 traffic getting close to Philly.
Also completely unsolicited advice that you are more than welcome to completely ignore, depending on what he does for a living you might want to talk about him trying to relocate to somewhere closer to Scranton. With all the hours and stress already anticipated from school I would hate to have to commute an hour each way, every day. That being said, since all the lectures are casted gives you time to listen to them while you drive and get some passive studying done.