Novice smoker looking at other ideas

Never participated in a forum, but I am passionate about smoking. To date I've only used my Weber grill and a "smokin it" electric smoker. Ready to go big with a wood burning vessel. Found an industrial dishwasher that is cast iron and about 700lbs that I'm going to try and build with. Right now I'm considering keeping the fuel and racks all inside the box with a single 2" ball valve and several nipples for oxygen. I look forward to seeing others projects.

Andrew
Chicago