Just wanted to update this thread to report that I haven't used this conical yet, but I'm working on the fermentation chamber.
I have the design finished. I plan on building an insulated wooden chamber that connects to the front of an old refrigerator (w/ top freezer). It'll be able to hold a minimum of 1.5 bbl. I won't start building the chamber until I finish the electric upgrade to my brewstand. When I finish the chamber, I'll shorten the existing conical stand and make another stand for a second conical, so it'll be awhile before you see this thread updated.