If she's white, go for it. Your future generations will not have these problems you speak of, you're looking at it from the perspective as if ONLY natural selection were involved. That's not going to the case within the next hundred years, we're entering the Biotech-Age where you'll be able to target certain genes/traits eventually. The height / circulation / near-sightedness is one thing, is she fairly smart / generally healthy otherwise?
Get rich, have a thousand babies. Deus-Vult!