I am seriously hoping to do this ride as well, but with only a Cervelo Soloist and a brakeless fixed-gear, I definitely need to add a recumbent to the stable first. If I am so fortunate to do this ride, I plan on starting in WV on the Panhandle Trail, connecting to the Montour and then onto the GAP and C&O.
I personally would love to hear about your trip...GOOD LUCK!!!