Welcome to the RTA Forum!
To help us narrow down some of the hundreds of campsites that are along the way, some more information would be very helpful.
How much time do you have for this trip? How much of that will be at your destination and on the road? Specific areas where you know you want to stop or visit (the coast, inland mountains, national parks, etc)? Are you tent camping or RVing/do you need hookups? Do you prefer private campgrounds or public sites?