1977 BMW R100 S BUILD

What’s up everyone,

I recently purchased a 1977 BMW R100 S. Bike has high miles (30,000 or so), but is in great shape and runs fantastic.
As an A&P mechanic for aircraft, I felt I wanted to take on this build on my own as much as possible.

What do people suggest when it comes to starting out? I planned on stripping the body down to just the frame and engine. I’d like to sandblast the frame and re prime / paint, along with the engine itself. Small amounts of rust are visible on the bottom of the frame.

Any suggestions?

Thanks!
PK