Welcome to BF.
I can give you no specific suggestions. When I plan a tour, be it an overnighter or for a month, I get on Google maps, bicycle option. Will show the cycling trails, and pictures of nearly every mile. Another mapping service is
www.bikeroutetoaster.com or
www.ridewithgps.com for elevation profiles/info.
This site is good for campgrounds of all sorts.
I'm sure you'll get some specific suggestions.
Good luck.