As noted, there are TONS of threads about this and too many (mine included) tour reports on Crazyguyonabike. Do some reading. In general, the only hairy part for me on that section is the Pacifica to Half Moon Bay--or a little before HMB, actually. This should soon be improved by the tunnel bypass of Devil's Slide, but some of the early steep, narrow nasty riding will remain, but overall, I think the situation will be improved. The tunnel and bridges, once complete, will have designated bike lanes. I figure they'll be done next year. Re. camping: South of Pfeiffer camp at Kirk NOT Plasket Creek, which is kind of a dump, relatively speaking. Also, last year there was a problem with potable water south of Lucia. You may want to load up with water before the drop to Kirk. There's a little store up there where I think you can do this.
Overall, it's a great ride, and one I will do again at some point. I've already done it three times. It's a great long ride when the interior of the country is baking hot. Always go N to S to get the consistent tailwinds.
I'm one of the few (only?) not excited about the Oregon coast as a tour spot for the summer. I found too much of the route choked with astronomical traffic anytime after about 10am. We're talking thousands and thousands of cars--CONSTANT traffic. Not my idea of great touring. It's beautiful and the camping is very nice, but the riding is pretty sucky. Brace yourself for the cars. Only in a few places does the route leave the main highway. When it does, the riding is bliss. I guess lots of people have a higher tolerance for traffic than I do. The section you will be riding is not as bad, although it, too, has a few high-traffic sections. You'll find, however, that in many places (far more than Oregon) the route follows secondary roads, and when you slip onto the Big Sur coast, you're not dealing with big population centers. The serious commercial traffic takes Hwy 101, a bit inland, leaving the remote Hwy 1 much quieter. San Luis Obispo is a nice place to end the tour, too. Beautiful town.