New to site and buding my first smoker!!!!!

What's up fellas?? Been doing a lot of reading on here and other sites on the web and decided to build a vertical smoker. I have a 30"X 72" long pipe and that's what I will be using. My thoughts after reading about a reverse flow vertical smoker is to use the pipe but make a box inside the pipe for the cooking chamber. So the heat/smoke can go on the sides and back. Was goin to make the firebox 18" tall with the water box above the fire, from there go 12" from the top of the for box plate with the first grill then another 12" and another cooking grate followed by another 12" and another cooking grate. My question is do yo fellas think this will work well and a good idea?? This will be a reverse flow vertical build

Thank ya fellas still in the design stage and will try and upload pics to get feed back.