San Carlos to Sonoyta (Ajo) March 3

It's just fine.

Thanks for the update how is the road from Santa Ana to Lukeville came down that way three years ago the road seemed well maintained but of course everything changes

You don't leave the Mazatlan to Nogales highway until Santa Ana, so you won't miss the stretch from Mochis to Navajoa.
Absolutely! We have been entering and exiting through Lukeville/Sonoyta for years, and don't intent to change.
We are a 27' Class A, and our friend who followed us is a 36 with a tow car.

We were considering going this way in April 24' class C the road to Nogales is not great either if you had to do over again would you still take this route and oh yeah we don't want to relive the stretch from Mochis to north Navajoa

Thanks