hellojoben, I doubt you'll have an issue with the 28H rim in a well built wheel. I've had a DA 9S/Open Pro/15-14 set for about 10 years without any problems whatsoever. I do suggest you build with butted spokes. I first used them on a CXP12 32H build and they've been better than a nearly as old, and comparably ridden, CXP10 32H built w/straight 14s.

Brad