It sounds like you have gotten quite a few great suggestions from dry fire practice, books, videos, and other resources like the USCCA, etc. I guess I would maybe look at this in the reverse order of the way you’re looking at it.
What I mean is it sounds like you have some pretty strong limitations , understandably. Like how far you can travel and how much you can invest in time and money etc.
Our situations are different as I’m in Minnesota, not California. But if my limitations were based on distance and time, I would probably start. With “how far am I willing to travel”. So for example, if you know you’re willing to drive half an hour tops that gives you a radius of ranges and instructors to search for. Or if you see some of those classes are 400 clams for a 2-hour class, you might want to look at a different range /instructor
or maybe that’s the going market rate in your area, it would be exorbitant in mine.
Anyway, if you see that they’re only three possible places within your range of travel than that narrows the field quite a bit. Of course, if you’ve got 30, that’s another story.
In the city I live in (Minneapolis ) the ranges have been zoned out of existence. Luckily the first ring of suburbs is not very far away. But with that said, if I were willing to only drive half an hour for example, that would limit my options. If I were willing to drive for 1- 2 hours that opens up a lot more options
Anyway, it sounds like you’re on a good path and you’ll be getting some new training in the near future. As you mentioned, all of these are perishable skills. Good luck in shaking the rust off and building new skills.