In the past we have had these two threads, and perhaps more, describing some risks and difficulties ... the more negative side of challenges ...
http://www.bikeforums.net/touring/73...e-touring.html
http://www.bikeforums.net/touring/73...e-touring.html
They might give you some ideas for this thread ... perhaps the things mentioned in those threads are your challenges too. Or maybe your challenges are of a more positive nature.
(and rather than bumping those threads, I figured I'd start a new thread and just refer to them)