It is a personal thing of course and kids would probably love either choice. My preference is more wilderness. I don't go camping to be around other people and feel like I'm at a hotel. Little kids love nature and my kids have always loved exploring and appreciating wildlife and the outdoors. You'll have to try both if you're not sure which you prefer. The Central Coast is beautiful. Before we got our own trailer last summer the only places we camped there so far are by the Kern River, Lake Lopez (in a rented trailer) and a KOA in Santa Paula (in a tent.)
Lake Lopez was great. We started out boondocking and unfortunately pulled in at night. We had a bad setup with a trailer too heavy for our TV at the time. Pulled into a spot on a hill and couldn't get out. It was a bit spooky. Just camped there for the night. It was an AMAZING spot when we woke up in the morning! Gorgeous. Unfortunately we were concerned about being stuck so we had to get help getting out of there and moved to the hookup sites. We were there during the week and it was wonderful! Because it so empty all the wildlife came into camp. We had deer, raccoons, California quails (state bird), and turkeys! There was a park for the kids and the beach of the lake within walking distance. My dogs had fun in the water.
We rented jet skis one day too. I would definitely go back.
The KOA was a little less private but still kind of fun. They have a zip line and a big air pillow to jump on.
The campground by Kern was not the best and the bathrooms were disgusting. Lots of riff raff type of people. Luckily we found a great spot tucked in the corner. Going back next month actually with our boy scouts for river rafting again.
HTH. Lmk if you want the primo spot numbers.