Those rims are horrid if your heavy. Mine constantly hit the brakes because they were so flexy, and started breaking spokes. It's the rims, not you!
At your weight, just get 32h Ultegra/Open pros or Ultegra/CXP33s and be done with it. I got mine from BWW for about ~350 dollars, and they have been issue free. I'm 200lbs, and spent all summer crashing into frost cracks and potholes on Idaho roads.

I would avoid something really heavy like Deep Vs or such though, esp if you plan on loosing weight. There is no sense in ruining a nice CAAD with heavy rims when there are lighter choices.