@1911: The state parks are very nice here. I've never stayed at MacKerricher but it's in a gorgeous area, and the ride north from there on hwy 1 to 101 is one of my very favorites. There's not too much "on the coast" heading north from there on--101 is mostly inland a few miles but does come back with a few stretches with great ocean views. The Oregon coast offers more consistent ocean views, along with heavier traffic.
Tyler organized a gathering a couple years ago around Manchester, and I'm not sure where they stayed. See what she recommends for camping down that way. One benefit of doing that is you would come in farther south on highway 1 than the Google-suggested route to Ft. Bragg (near MacKerricher), you'd also hit the ultimate California coast ride, IMO, highway 1 between Jenner and Ft. Bragg, empty miles along the edge of the continent on a curving, gorgeous road with nothing to your left but the ocean and a couple hundred foot drop-off down to empty beaches (that you can't get to except by flying off the guardrail-less road.) But it's damn dramatic. And fun riding. And very little traffic, since it just connects some pretty isolated spots. Kind of a long day from Mariposa, though.
edit: Heading north on 101, if you come to it by hwy 1 at Leggett, you will pass by several very nice state parks, some of them right on the coast. Check a state parks website. Don't forget the Avenue of the Giants, too, just off 101 south of Eureka.