I have a good size home, but I don't really have anywhere that I could hang them. My downstairs has a lot of moisture, (and causes alot of oxidation on the frets, screws, PUPs, etc..) so I keep all of my guitars upstairs in one of our extra bedrooms. The room is a bit colder than the rest of the house, but its the best I've got.
Anyway, I keep all of my guitars in their cases at all times, unless I'm playing them. I keep 1 to 3 packets of silica beads, in each case. I don't believe in lying the cases flat, I usually rest them on the side of the case, so they are basically in playing position when stored.