Be aware that if you are "doing business" in California which means you live there you also have to file as a California foreign entity and pay the absurd anti-small business flat tax of $800 a year.
This also does not include your state income tax liabilities in California. Just because the LLC is formed in Delaware does not mean you don't have to pay income taxes in the state you reside. Delaware is just the legal residence, has nothing to do with income taxes.
I moved to Tennessee in January and switched my single-member disregarded entity LLC from California to Tennessee. The annual fee in Tennessee is $400 vs $800 and there is NO STATE INCOME tax in beautiful TN.