Your post and profile don't say what you'll be traveling in. If it's a 40' MH, you may have trouble finding suitable places to get off the road. If it's a 4X4 TC, you'll do a lot better, but then you won't have as good AC.
We've been going to Mexico 25+ years, but always staying in smaller resorts. We obviously like it, but I'm not sure how we'll you'll do boondocking. It seems that as soon as you get off of a blacktopped road, they get rough quickly for a MH. I've seen MHs stuck in Mexico and trying to find a wrecker isn't easy. DON'T CAMP IN THE ARROYOES, and watch out for the seasonal rains when camped off of the road.
Bill