those are the same rims as my first race wheels, but I weighed 135#.
The next year after I was winning races, I went to Super Champ Competitions, approx 350 grams.
And a set of Arc en Ciels too, the lightweight set year two.
and another set of SC etoiles that were near 400 grams each.
The insurance to finish the race to provide points for the races that had a team trophy.
for a light rim those are pretty strong, appears you scored a long term supply.