I'd give a mail forwarding service a call: https://www.sbimailservice.com/
My "residence" is my St. Brendan's Isle mail address. This was a lot easier for me since I was already a Florida resident. I was able to easily change my drivers license and so on through the mail.
But I know they handle other people changing their residency to Florida. That may or may not save you any money though. For example, if you return to California there may be issues with staying there long term with a Florida registered boat.
If you're going to be permanently on the move I'd look into a few services from a couple states and get some ideas on which one will work best for you. Every state will have different taxes, registration fees and so on that could impact your specific situation.