I like Jan's plan. I would want a 4'X8' padded cutting table like I once had. Just remove the mat and iron on it. A walk-in closet with narrow shelving all around. AND most of all NOT in the middle of the house for others to walk by and disturb my train of thoughts (with a door to close off my mess). A place for several machines to be set up and pegboards back of each machine for their accessories. Also a cabinet to store my threads out of the dust.