I did this last year westbound and used 30 out of PA (Lincoln HWY), then 224, and 24 through central Ohio and Indiana (Wooster to Wabash to Peoria to Davenport basically) to avoid the whole Ohio toll scam and Chicago traffic mess. Nice roads, pleasant small towns, easy pace, plenty of good services. Going east it will be the same. 30 will take you right into S Central PA and straight to Pittsburgh if youre not careful.