Had a set of Nemisis, and built up some Crono's on AC hub with Sapim spokes. 1200g. Still have some Mavic Reflex stuff for the track.
I had cars with carburetors too
Robo, you can get 50mm Gigantex rims on Novatec hubs all day long for $500 or less. They will be lighter, stiffer, and have better aerodynamics then any alloy tubular you can build for that price.
And salmon pads work well on carbon in the rain. I sort of know this because I sort of won a crit in the rain on them, and did a lot of descending on wet carbon rims in races over the years. I even got snowed on once.