congrats, indy! It'll be a blast. A group of 4 of us did a self-supported hotel/B&B tour of most of the Katy a few years back, and I think all of us spent more time on the research than the tour. It WAS fun, and a good intro to a new level of bike touring. But the time I went to the Big Island of Hawaii on a Bicycle Adventures tour with my dad & stepmom, where they did everything including carrying our bags? Now THAT was a phenomenal trip, and a wonderful vacation.
Sit bones = ~135 mm, saddles that work ~ 155cm/6.1 in wide
2003 da Vinci (custom road/all-rounder)/Terry Butterfly Ti
1994 Gary Fisher Nirvana (vintage MTB/commuter)/Terry Butterfly Chromoly
1991 Terry Symmetry (NOS frame/fork, project in progress)
1973 Raleigh Super Course (project in progress)