It is v difficult to try to play charley patton's stuff even though (maybe because?) it is pretty crude. you may well be familiar with this series of books, they are by far the best resource for getting an idea of what the players were doing on the guitar, stefan grossman actually learnt direct from a lot of them (or at least learnt direct from people who had learnt direct from them, in the case of charley patton):
Delta Blues By Stefan Grossman | Used | 9780825602863 | World of Books
he is very careful to transcribe every single note/ghost note, so it often makes simple things look v complicated, but that is also the great thing about it. The volume on Texas Blues cover blind lemon jefferson, and Ragtime Blues covers blind blake and more blind lemon jefferson and a load of others.