Hi msy,
BayBed & Mattress is one of the manufacturers that has been invited to become a member of this site which means that I think very highly of them in terms of their quality, value, service, and transparency and I believe they compete well with the best in the country. They make component latex/pocket coil hybrid mattresses that can be individually customized both before and after a purchase. This type of mattress (pocket coils and latex) would normally work well with an adjustable bed. A forum search on BayBed (you can just click the link) will also bring up more information and feedback about them as well. They would certainly be well worth a visit for anyone that was within reasonable driving distance.
Some of the other options and possibilities I’m aware of in the Santa Cruz, Salinas, Monterey, and San Jose areas are included in post #2 here.
Phoenix