[Closed] Wheelbuilders - a Question or two, if I may?

So, I've built a fair few wheels, but this, tonight is my first foray in to Toray (Carbon).

The rims I have are Asymmetric 29er rims, I'm assuming this means that on the rear, the asymmetry should pull toward the NDS in order to provide more triangulation to the DS, and the reverse on the front?

Nipples - should I stick with Brass or go with Aluminium? The rims are capable of handling a MUCH higher tension force than any or my previous alloy rims, would the alloy nipples be stronger as they have a higher tensile strength...

Cheers,

M