BMX Resto Mod?S

This is the pile of parts I've been lumping around for almost 25 years that I've finally decided to do something with. It's a 1979 Mongoose Supergoose with a pair of Skyway Tuff II's of a similar vintage. It was my friend's bike back when we were in middle school, before we were old enough to drive.

Now that I've decided to do something with it, the next question is what should that something be? Should I go the "concours" route and source OEM stuff like a pair of Motomag rims? Or should I build it the way I would have back in the day if I had the money?