The last CG motor I came across was in an atv, which was really terrible because going slow resulted in slipping the clutch. I did notice the engine ran great so you should be in good shape powertrain wise.
I wish I could remember the name of the ATV. I think I ended up getting a PZ carb, and intake for it, the CDI box seemed to not be the greatest quality so maybe keep an eye out for electrical gremlins.
I see no reason that this bike won't outlast us all.
It is a very cool souvenir!!