We did a similar trip about 3 years ago, except we bought a camper in Florida and finished in Seattle.
Keep in mind that unless you get a visa you are limited to 180 days in the US in a given year and no more than 90 days at a time. Going into and out of Canada or just Mexico apparently (according to US Embassy) does not stop the 90d clock. When you're heading into Mexico, make sure the US immigration record your exit. This does not normally happen. Tell them you are going on to Guatemala and probably flying home from there - or something like that.
I would encourage you to consider going down as far as Panama. All of the countries on the way are worth seeing. For "campsites" in Central America see: http://grumpyinamerica.wordpress.com/campgrounds-ca/
I know of only 5 proper campsites in the whole of Central America. Hence the quotes.
For camping in Mexico - Mexican Camping by Church & Church is the bible. I still have a copy but I couldn't part with it. Anyhow it gets updated most years.
Also in the US I would trade Colorado for Yosemite and Yellowstone. Buy an annual pass for the US National parks - big savings.
Sorting insurance can be a pain. If you haven't already sorted - let me know and I'll try to dig up the contacts I used.
Keep in mind that unless you get a visa you are limited to 180 days in the US in a given year and no more than 90 days at a time. Going into and out of Canada or just Mexico apparently (according to US Embassy) does not stop the 90d clock. When you're heading into Mexico, make sure the US immigration record your exit. This does not normally happen. Tell them you are going on to Guatemala and probably flying home from there - or something like that.
I would encourage you to consider going down as far as Panama. All of the countries on the way are worth seeing. For "campsites" in Central America see: http://grumpyinamerica.wordpress.com/campgrounds-ca/
I know of only 5 proper campsites in the whole of Central America. Hence the quotes.
For camping in Mexico - Mexican Camping by Church & Church is the bible. I still have a copy but I couldn't part with it. Anyhow it gets updated most years.
Also in the US I would trade Colorado for Yosemite and Yellowstone. Buy an annual pass for the US National parks - big savings.
Sorting insurance can be a pain. If you haven't already sorted - let me know and I'll try to dig up the contacts I used.