My advice is, just how much room will I need in their run? My original design has a 6x4 ft. run area, and a 4x4 ft. house directly attached, the whole thing as an A-frame. Would this be enough room for three Welsh Harlequins? I plan to move the entire unit each day, except for days that we are gone, when I will have somebody come by and check on them, but I won't ask anybody to move the tractor. We are usually gone a couple of days at a time, camping and such.