Well, if I go with the full blown enclosure project and erect block/stucco walls like the rest of the house (i.e. surround the slab with them) and put new roofing (and insulation) over it, it will be my new "great room" where my office desk etc. will be, as well as some other storage. So It will probably need the same constant ambient temp. as the main house. Still, Perhaps I can cut back a little in the main house while I'm in there. There's also a window that leads to the master bedroom that I might open fully as an access way (and put a security door there). The possibilities are endless, at this point.