I would NOT ride that alone. Unfortunately while that trail is a terrific addition to the communities in that area, they aren't policingthe in town parts very well. My friends stopped for ice cream in Harrison ( omg, great ice cream there) and white trash low life were harassing he and his wife and kids while they were sitting in the city park taking a break. Personally I think you are at more risk in the towns like that than on the trails, as most creeps are too lazy to get more than 50 feet from their cars.
Check with Vertical Earth in CDA, and Mountain View Cyclery in Hayden Lake. Great shops, with really strong road riding teams out of them.
irulan