I was having so much fun reading.
Gamefowl, you'll do fine... I only have 6 girls and only 4 are laying I might finally have enough eggs to start providing my mom's house. But once the other 2 start I know we will be a tad over our needs. Believe it or not we already have people lining up for eggs. And I'm not talking about just anyone people asking about eggs, these people are asking how much when will they be ready how often can they get eggs.
I live in a subdivision and our county laws only allow 6 back yard hens, so I'll never really have a surplus but when I do I know I can get at least a few $ back for all my work.
It's worth the effort, but start small go with what you have and see how things go. Then add more chickens once you have a base line. From what I've found for CA you don't have to do anything special to sell them "private" from your door step and in some cases if you sell them to a feed store, but if you want to ship, or sell at the farmers market them your "commercial" and would need to look into requirments. Remember posting online adds might put you in the "commercial" selling too