It's yours so it's up to you what rings your bell. But me, I'd take my time and collect the parts - fork tubes, seat, tank, etc - to get it back to a stock configuration. I don't think it would cost all that much, and done a little at a time, wouldn't be a big strain either.
But I wouldn't tear it all apart, I'm into evolution rather than revolution so keep it rideable during the process. Unobtanium parts, I'd figure out another solution that fit the character and go with that. Those were such cool cafe bikes naturally, I'd keep it in that flavor.
How much did you give for it???