Nope, sounds good to me. I'm planning on doing the same thing. Go for it. It's sounds like fun to me.
Obviously you gotta have a welder and if you want to be fancy, you'll need some flanges and hangers.
Only thing is that it's kinda hard to figure out what you'll need. I think J.C. only provides 45s and 90s so, you'll end up cutting some of those to make it work.
If you want to be exotic check this out.
http://www.burnsstainless.com/