Absolutely fantastic ride report, I really appreciate you sharing all this with us.
I am struck by how much Mexico has not changed. My family traveled the length of the freshly created Highway 1 in 1973 from Tijuana to La Paz then across the bay on the ferry and back up the mainland in our Winnebago. I was 13 and can say that we were very naive and had no idea what we were doing. I still remember my dad carried a pistol with us hidden in the stove exhaust pipe!
Maybe I can find some photos from that trip to share.