I have done the brp/sd many times, always a great ride.
At least twice I did the entire thing through without stopping, once coming back from Florida, the other on the way home on a 9000 mile round the US solo.
One time it was so foggy I could not see the center line past 5 feet, 3am, middle of nowhere, with a sight distance of 5 feet!
95% of my riding has been solo, do what you want, when you want, go where you want, stop (or not) when you want.
If you wait for others, you likely won't ever go.
Back when I used to take the long trips, I used to use KOA campgrounds a lot.
They had a guide with maps to all the locations, had stores, showers, laundry and a pool. You usually got a table and an ac outlet, and it used to be cheap for a tent, $6.00 to $15.00 a night.
I loved the one at Devils Tower, rustic store, corral where locals practiced their cowboy skills.
I looked on line at prices lately, wow things have gone up!