A lady I met on the AT last year and have become good friends with has put the idea in my head to walk across America with her next year. I am very seriously considering this insane idea. It sounds like it would be one heck of a grand adventure.
Since much of this ADT "trail" is road walking of one kind or another, I'm thinking of making sort of a two wheel cart to drag the packs behind us. I think this would be a lot easier than wearing them. The trick will be making it light enough to be able to carry if need be for a day or two and be able to break it down to mail ahead when not needed during longer sections of real trail hiking.
Well, we got a whole year to plan this walk, I'm sure just doing that much will be a job in it's self.