What an educational, and experience-filled trip that could be- and at the right ages too. We try to take a few months or at least a few weeks each Summer, and now can travel very lightly- but appreciate having the extra space for unforseen and for extra space on rainy days. C class lets you drive while they sleep, which is very helpful. I also wouldn't want to disconnect a trailer daily if my goal is to tour rather than to spend many days in one place. We spent a few days with a French family matching yours that did just fine in a 22' - they started in Boston, went to Vancouver, and ended in Cancun. I'd love to read your adventures, please DM your blog, and also if we can share any tips. Traveling in a unit for which parts are easily available South of the border would be my primary driver, but I've not researched what's common.