Thanks for the input so far.
My plan is to host this site through a provider I use for my business, thus cutting costs and also eliminating silly advertisement and popup issues.
Larry, thanks for the thoughts. I spend a lot of time working in the webworld, (at home and at work), so I'm not so worried about setting aside time - if I can make time to watch hockey, I can work while the game is on
Greg, I hear you. I have every intention of building a base content management system in ColdFusion and using that as the foundation for all the sites. If enough dojos are interested, I might also invest the time to develop content management tools so that the dojos can update the schedules/announcements themselves.
Thanks again, guys. The more input I get, the more effective my service will be.