Muddy Trails, where in Andalucia do you live? We did a tour there last year, with the absolutely best cycling touring company around. It's a very small company, called Cycling Country, owned by a couple named Jeff and Maggie. They led our ride and we visited their hometown on the tour, met their daughter, saw their office, in Alhama.
We did not go into the Sierras, though . The climbing we did was bad enough! Two category 3 climbs and one 10 mile category 2.