When is this? access through Big Sur from the South (San Simeon/Morrow Bay) is closed for maybe the next year due to a slide. I would spend 2 days in Monterey. Lots to do there, and you can access most of Big Sur from the north that way. FYI Highway 1 is only called "The Pacific Coast Highway" in Southern Calif. In the rest of Calif. including San Simeon and Monterey it is just call Highway 1.
Ok thanks appreciate your advice. Coming over September/October 2017
More of Highway 1 should be open on the north end by the time of your visit, so I would stay in Monterey in order to see that stretch, which is more scenic anyway.