I am no expert but this is my understanding of low spoke count wheels. Equal spoke tension set at the right value is critical throughout the wheel. Small variations can lead to spoke failure. One needs a tension meter to set tension and true wheels. Some manufactures, such as Rolf, require very accurate measurement of tension that is beyond most shops and traditional spoke tension meters.
Whatever you can do, or dream you can, begin it. Boldness has genius, power and magic in it. - Johann Wolfgang von Goethe, writer