Why not head to the west coast? Cross at Nogales, you can get to San Carlos in one day. Safer and easier than the north Gulf coast.If you feel nervous, Fantasy, Adventure & Caravanas de Mexico are running less than 30 day trips as far as Mazatlan, or in the case of Fantasy, Rocky point. You can easily get as far as San Carlos on your own however. PM me for info on what you need to do about permits if you like.