Wow, that's really cool.
There aren't codes about building permanent structures so close to property lines in your area?
I'm also a bit concerned about the hot stuff coming out of the chimney in the middle of a roof.
Sorry if it sounds like I'm nagging, just an observation.
Great looking project though, I'm very impressed.
"Do not eat the meat raw or boiled in water, but roast it over a fire." - Exodus 12:9