With respect to the floor plan what you are missing by the lathe/mill/Toolbox is a small worktable. Even if you put your woodworking table on wheels it's not likely you'd want oily stuff sitting on it. For example a place to lay down the caliper, the plans for the project, test screws or nuts etc. Perhaps if it's a small roll around table with a shelf that then holds the vise and rotary table and maybe a 5C indexer.
I think we have to treat it like a kitchen that has a decent work triangle. Not Fridge/Stove/Sink but Mill/Lathe/Table.
Make sure you hang a welding curtain behind the welding table. I have white tiles on the wall over cement board. I was surprised to see little metal bits have melted their way into the white tiles. You don't want the back of your mill polluted with that.