TulsaJohn > Thanks for the info/advice on cyclocross tires. Since I plan to do 90% of my touring on roads doing the TA, Atlantic Coast etc. I feel that I should go with 700c full road touring (Americano). I'd like to get one as soon as the C&O is in good shape after winter. I'll try it out on the canal and see how I like it. It will probably be fine just like you said but, I'll most likely want to baby it and end up getting a mid-level MTN bike for the C&O and save the Americano for the roads.
JamesFrank > The Koga Miyata World Traveler looks like a good bike. I have their '09 catalog. 1999 Euros, about $2500. USD They sure do put everything on it. Racks (Tubus), lights, fenders with mud guards, even lights and a dyno. Pedals too. I guess it just comes down to which riding position you prefer. More upright flat bars with 26" wheels or road bars and 700c wheels. The Pangea does have 26" wheels but keeps the road bars. When I did MTN Bike, years ago, I always had a hard time keeping my hands, wrists comfortable after an hour or so on the C&O Canal. Bar ends helped but not enough. Hope this helps.