TomT,
If wading wet is out of the question, I would probably buy a pair of $99 breathables, and some patches. cabela's ought to have them.
I have a pair of LL Bean River Treads (wading) boots with the aquastealth sole. I have not done two weeks in them, but I have done some ten mile (plus fishing) days in them with no blisters. They also make an 'Ultralight' boot that might work, or, dependinmg on how froggy you feel, there are wading sandals.
I think the last time I did a BP trip with fly fishing, I went wet though.
Good luck. Please let us know what you decide, and how whatever you select works out.
