I like it! I actually had a very similar one that I sold because I was moving. I am building a similar one again right now with drain and return ports added.
If you don't mind my asking what element areyou using? My old system was a 44qt pot just like the bayou classic ones with a 2kw element, tge replacement one I am making for 3 gallon batches and is made from a 1/4 slim keg with an all stainless 1650w element. Both can boil a full kettle nicely, and since it isn't over powered there is no need for a controller to dial back the boil.