I am certain someone has said this already but the MABDR route would be an excellent recommendation for the PA to VA leg of the trip. I rode the VA, WV and MD sections a couple months ago and it was some great riding! Nothing even the tamest of overlanders couldn’t handle. A little tricky in spots by motorcycle though. There are several other accounts of it out there but if you’d like some tips let me know! Also I’ll be following along. Would definitely be interested in seeing how this progresses.