I did the PCH from San Diego to San Francisco a couple of years ago by car, I'm more than sure this is one of the best roads in the world and even better with a motorcycle!!
I did that trip once in a car as well about 15 years ago. We camped at Big Sur along the way. It was incredible. On the bike, so far at least, I’ve only stuck around the San Diego to OC area. I’d like a slightly better road bike if I was going to go THAT far North again.