Good choice with the 2.3 head spokes. Mine are the Wheelsmith ones. I also suggest using locking nipples, although they cost 3x as much. They ARE worth it to hold solid and they soften the stress, IMO. No goofball spoke prep involved. My GVW is up to 290 lbs on tour. Nothing breaks, my front SA XL-FDD wheel has 24,000 miles. They are heavy IGH drum brake hubs.
My 120 lb tour bike has a Rohloff14 with 32 2.0 spokes, way less stress and problems than derailleurs.