thank you all for your suggestions, they make a lot of sense. And thanks also for not saying "you're crazy, you're too big to make the ride, forget about it, etc etc." That said, if I'm honest with myself I really AM too big to make a ride of that magnitude any time soon.
Unless I hit the powerball or something, I won't have the money for the gear/journey in time. I could probably scrape enough together to make it happen, but that would leave me returning essentially dead broke, and that would be a huge buzzkill after a liberating trip like that. I think a smarter way to approach it would be to shoot for next fall, and have a year to plan and save. My last "long" ride was from St. Cloud, MN to Omaha NE in 1995, and it was a disaster because of poor planning, unexpected high winds for all 4 days, and the fact that my traveling companion and I were in nowhere near good enough shape to do roughly a century a day for 4 days in a row. And that was the time in my life when I was in the best shape of my life! Anyway, another question might be asked at this point- what are your thoughts on a good recumbent bike for such a journey? I know they can be expensive as hell, but my back ain't what it used to be, and it's another option I'm considering. Can anyone suggest a sturdy model that doesn't break the bank? Thanks again for your help btw