If you're interested in a stiff light wheel consider the DTswiss RR440 (asymetric for the rear).
I built a set of these with the same hole count you are considering using CX Ray and CK front hub. The Asymetric rear rim gives a few extra mm of bracing angle to the spokes and built into a very nice wheel. With that rim your G3 will build up with more even spoke tension than some "normal" hubs.
At your weight you may even be able to drop the front to 20 spoke if light weight is what you're after.