Sorry I don't know much about stands aside from knowing that they are very expensive. Perhaps someone else will help you with this.
Apologies, I thought I had uploaded pics of my desk. Heres what it
was and heres my
current arrangement. This is a old pic and not what it currently looks like, but I basically made the desk with plywood so that it could comfortable fit two monitors and subwoofer and also integrate my system into the desk. I guess you can make a far better and more flexible desk just for your system if you used a carpenter.
Theoretically it should work, but theres always a chance that it won't. My 280x runs with the hdmi plugged in but it often blanks out and reconnects after a few seconds which is slightly annoying.