Good move on making the garage a woodshop. I did mine years ago and my poor wife had such a hard time not having her parking spot I modified things a bit. I have alot of tools and small cabinets/workbenches on locking casters. I move my stuff around all the time. I do have an area that is not moveable and I found 3' is the minimum space for walking around and more is needed to work around places. You will find that as time goes on you will move things around to make your life in the woodshop easier. Best of luck, Jeff