Interesting background which landed it in the hands of the PO. He used as daily rider. While dirty, it at least lived inside.
Not knowing history, and looking for a good project, I renewed a lot of the important mechanicals. Chain and sprockets; wheel bearings; tires; fork oil and seals; oil; belts; assorted rusted fasteners; brake fluids. Cleaned and checked everything else except engine internals. Dealt with expanded plastic tank and a few other things.