Harvey, the radio for weather you can use a good shortwave receiver or just stop by one of the other boats in the anchorage and ask. A lot of the smaller villages only have solar powered watermaker and not a lot of extra. Using our saltwater foot pumps and tank water we have about a weeks range, if you stay within a weeks range of Puerto Escondido or La Paz you will be able to visit many of the islands and anchorages, right now we are enjoying La Paz and have a slip at the monthly rate and are going out to Isla Espritu Santo and Partita for a few days in every calm window about 25 miles north. In town internet is everywhere and with Fishweather, Predictwind and Passage Weather forecasts are good a week out. We use a AT&T international phone plan which covers all of north America for our data. Our slip is under $400 a month, 500 in Puerto Escondido. In Puerto Escondido the big town of Loreto is a few miles north and the area has some of the best, most scenic anchorages in the Sea within 50 miles, trailer storage is easy and secure, the launch fee and tractor to launch you are included in the storage. So in Puerto Escondido you could explore for a week at a time out and back, enjoy Loreto's great restaurants and shopping and also drive into the big mountains range for more scenic views and visit one of the historic missions. Storage is harder in La Paz and why we left the truck in Puerto Escondido. It is a 125 mile run down to La Paz, we will only really need the watermaker on the trip back up next month as we will do it in short hops between anchorages for around 3 weeks. We always use an iPad with Navionics as backup navigation and it works fine, the bible Anchorage guide is Shawn & Heather's sea of Cortez guide, a must have. I encourage you to buy one, it is amazingly done and describes weather, paperwork, culture, and has beautiful photographs.
A Garmin InReach for satellite texting can get you limited weather, friends and family can track you and text, and an SOS will get a Mexican Navy response, we have one as most cruisers do down here
We went from cool 70s a couple weeks ago to 90 yesterday, not much humidity and should drop back to the normal low 80s soon so we don't need AC. November, and mid March through mid May are the best weather months for wind and temperatures. We still have big boatitis from the past and you would be fine as an experienced cruiser on a 22, maybe easier than parts of the PNW cruising.
I hope this helps, Micah