Great pics....
Have you considered joining your local TRF (Trail Riders fellowship)? It sounds like you are keen enough and the organisation are always looking for enthusiastic members, especially those who can do research and help fight the authorities when lane closures are looming.
And a little tip.....try not to use the term 'off-road', believe it or not, a rider had his insurance cancelled without his knowing by his insurance company as a third party had used the phrase.
The byways you are using are public roads, and along with UCRs, that's unclassified county roads, these make up the remaining routes we are able to use with our motorcycles in England and Wales.
I'd like to visit the area with a larger machine. Keep me posted if a ride is in the making.
I'd probably need a campsite or pub type B&B near the start RV.