Need help with a rack

You might take a look at the Sanus Natural Furniture stuff.

i was trying to decide between a core designs and a timbernation rack. i ended up with a pair of core designs mod3 racks. they are great and the american black walnut looks amazing.

http://coreaudiodesigns.com/

Because my system was in our living room, and because we had mostly antiques, I was in a similar situation as you. Searching antique dealers, I was able to find a cabinet meant to display dishware that probably originally sat on top of a counter. By strengthening the sides and back and converting the shelves to maple (from Timbernation), this became quite rigid and functioned very well. If you are interested, give me your email address and I will send a picture.

If modding is ok then maybe DIY is for you, here's my experience.
I wanted a rustic look when I was building my rack. After some experimenting I used Pennsylvaina slate. There would be some changes if I was to do it again but the slate works well and has a rustic. Check my system for pics.