I would like to build a nice size patio reverse flow smoker. It seems like I cannot Eat enough bbq. I have no idea what size to even start with. I would like to use it for my family but on a occasion We have birthday parties for my 4 kids which there might be 40-50 people at. I am a sales guy in a fab shop so I have access to 1/4, 3/16, 1/8" Steel. Plus a good welder who will help me out. I have no idea about dimensions or parts I need fabbed, anything of that nature. Thanks for the help.