The last campsite is about 2.2 miles from the start of the road. Theres a big dip in the road right after this one. That’s where I stayed. In the beginning of March during the week I was the only one around. I would agree that there aren’t many spots available on this road; I counted like 6-8ish spots. Some have their own driveway so to speak so not sure if those were one or more spots.
This spot had a fire ring, extra firewood, and enough spots for about 4-6 cars/tents. So a big group can easily fit here. It was a little windy in the afternoon, I positioned my car to block the wind from the fire pit.
I did get some sort of animal visitor at night, not sure what it was but it walked through the campsite. There are cows further down the road.