The more space you have, the more stuff you accumulate. It gets overwhelming to me. I have been purging for months and have not missed any of it. I would plan for the space the furniture you need for your machines. Got a long arm? Start there. My room is 13 x 17. A twin bed takes up space next to a wall on one end.
Plan for plenty of table height outlets, lighting, windows, etc. Have fun!
Sandy