If you're doing business in CA you'll still need to register as a foreign corporation, so the Delaware registration gets you very little.

http://www.sos.ca.gov/business/corp/corp_faq.htm

"Do I have to register (qualify) my out of state (or country) corporation in California?"

And it looks like the LLC doesn't avoid the fee:

http://www.sos.ca.gov/business/llc/llc_faq.htm

"Every limited liability company which is doing business in California or has filed Articles of Organization or an Application for Registration with the Secretary of State's Office is subject to the annual limited liability tax of $800."

If you're going to have a "lifestyle business" and you will be living in California you may as well just register the company in California. All Delaware gets you is more paperwork, i.e. the requirement to file in Delaware AND California.