I'm considering doing my first overnighter too. I was thinking about riding down to Big Sur from Marina. You can hop on the Coastal Trail in Marina and ride to Monterey, work you way around Pacific Grove to Pebble Beach and the 17 mile scenic drive then onto Hwy 1 to Big Sur. I think it can be done in a day, but am not sure. I see peopling touring that way all the time, so there must be plenty of places to camp. Maybe someone else could weigh in?