Napa and Mendo are beautiful places (away from the areas mobbed by wine tourists!), and yes, our conditions are similar but cooler (on the coast). Dense fog out my window again this morning, I can barely see the chooks poking around their run across the yard.
I am very blessed to be physically healthy and fairly strong as I approach my Big 7-0 birthday this year. Being an avid (some say rabid) gardener was my exercise and therapy for decades in a stressful job in Los Angeles, and my comfort & joy now that we're happily retired in rural Humboldt. The chickens are my new icing on that cake!
We've always had dogs - both of us suffer severe "fur hunger" without them, but I'd never trust either of ours with the chickens, prey drive is just too strong. The border collie mix in particular lies outside the run and STARES at them intently (with ILL intent), often holding a squished tennis ball in her mouth the whole time; the corgi is a veteran hunter of small furry & feathered things and is low-to-the-ground, sneaky and FAST. Alas, he likes to bring his successes into the house to enjoy.

I am so sorry you can't garden any more, that's such a sad loss to someone who enjoys it very much! The permaculture methods are labor intensive to start, but (ideally) much less work as the guilds mature. We'll see if they mature faster than I "over"-mature!
