Rt. 101 up the Oregon/Washington coast is a wonderful route which you will enjoy. We did that whole area in our FW this summer.
When in the SF area you need to take the tour of Alcatraz. We stayed at the Novato RV Park across the bay from the city. It was a great place to stay with pull-thru sites. The sites were not that wide but it was extremely clean and well ran. All the campers seemed to be in the city all day so it was always quiet. The ferry was very cheap and only about 10 minutes down Rt. 101 from the CG. Public transportation is great in SF, driving your own car/truck is not so great.
Another great CG that sticks out in my mind is Premier RV in Lincoln City, Oregon. It is right on Rt. 101. We had a spot on the upper tier and could look out our back window and see the Pacific Ocean! On Friday evening the CG hosted a FREE happy hour around a gas fire pit. They provided all the food and no one went away hungry.
Except for Alaska, Rt. 101 on that coast is probably one of the most scenic, majestic drives for an RVer.