According to Rotor their BB30 spindle should work with PF30 or BB30a and if not then one of their other spindles certainly will. Carbon Aldhus with a direct mount Gabaruk chainring would be seriously light too, wonder if it would be possible to ask Gabaruk to make one?
Would rotor bbright cranks would work on a bb30A ? the spindle is def loing enough but the right spacer should be found on the NDS to compensate