The fact that you used to play this very machine many years ago does make it very special.
Restoring it, and getting the old girl a makeover, and keeping it original, but fixed up well, gives and keeps the machines real character.
I would probably replace the backglass in time, but restoring the playfield, and maybe clear coating it one day, will give the old girl a new lease on life.
You are right, chasing down that "elusive machine" that you have wanted for many years, is a special feeling. Walking out to your pinny room and seeing it there now forever is even better. Well done, and looking forward to the strip down and resto.