The idea of at least trying the Hybrid for touring is not a bad idea. I think I could put a rack on it. As long as it is a short 2-3 day ride if it isn't working I would not be stuck too long with it.
What size and model tires would you'll recommend? I will be doing mostly blacktop. But, I suspect there will also be some gravel involved. I don't mind paying extra for a really good set of tires for touring.