We have 8 days to tour PA. I'd like for my grandson to see Philadelphia and all it has to offer educationally. My husband would like to spend 1 day at Gettysburg so he can learn about the Civil War and we'd finish it off with FUN at Hershey for 2 days. Any advice or suggestions on the best route - where to fly into, other places we should see, etc. Thanks in advance for any help you can give me in planning this itinerary.