So, I don't know why you're posting. What do you expect as an answer?

You've already decided what you want to do. You're already convinced it's the best alternative. You say you're receptive to alternatives and I suggested one - using lighter spokes vs. fewer spokes, but you've apparently already ruled that out .

So if all you want is validation of your plans, you don't need us. If it's simply a check of the math, I for one, don't want to bother. For the math, buy a high school kid a beer (I know it's illegal, that's why you get so much for so little).

You have what you need or want to build the wheel of your choice. Ride it in good health and stay away for cars.