I hope you find the tank your looking for, but if you don't I would also suggest drilling it. Drilling is generally more cost effective than trying to purchase a "RR Tank". If you want something that looks nice that you don't have to build yourself check out glass-holes on the net. They have boxes, kits, and free shipping. That may help you avoid the " 3rd graders experiment" look.
Adding a fuge should help your nitrate problem, but you still should try to address what is creating the problem in the first place.
As for the 10 gallon tank... A QT is priceless. You hear so many stories about how one fish or one coral absolutely wrecked someones tank. I doubt you want to be the one telling that story.