Well, I'm a good ways into the pleating. The width is coming out to be ~3/4 of an inch. Depth is 4.5 inches. Believe it or not, this will be a kilt of over 10 yards of material! I thought it might take a full 10 yard length, but over that? I went wonky in my math somewhere. Oh well, this kilt will have a swing to die for. Here's a pic of the pleats I've done so far (clickable thumbnail):