Hi Eric,
I just saw this, I'm sorry.
I have a friend who does natural
gardening and
beekeeping in Camas. She's a great resource for all sorts of things. Western Washington in general, any region, has a lot of
permaculture people I've found. I think that so long as you're outside of an urban zone you
should be ok on most things legally, but I would give check it out. Cowlitz county wasn't very restrictive or nosy when I lived there. I think that selling farm products (depending on what they are) and you pick days, weddings, etc. probably have similar laws and regulations in most counties. Farm products might have to be done in a certified commercial kitchen, though I know in my county (Lewis) people can certify their home kitchen that way in some circumstances. I know a woman who runs a bakery out of her house and is certified to do so. I don't think any county would have many problems with you pick, and weddings and farm to table probably have some safety regulations like maximum occupancy (depending on the building), fire hazards, etc.
An advantage to that region is that it's not too far to tap into the Portland/Vancouver markets.