The sad thing about Cali is that so many great parks are located in the state. Yosemite, Kings Canyon, Death Valley and Lassen Volcanic to name the top four in my list. I have never been to Kings Canyon mainly because it is hard to get to, you have drive deep into the state and loop around Bakersfield to get to it. We tried one year, were camped outside of it when they closed the roads, maybe a fire.
I've spent months in Yosemite and DVNP and weeks in Lassen. Along with the minor parks like Pinnacles and Joshua Tree.