It is a little more than an hour north, but Isn't there a pretty nice, coastal campground at PP? I can't really remember, but I think there are some nice coastal campgrounds up north if you like beaches. You would have to go North to go South but it might be a nice change from Central CA
Oh and I should go on record as saying that I drive like the proverbial bat, so my timing should be checked by someone with a lighter foot.