My shop is 30x48. Half of it is set up for woodworking, and the other half for auto. The sawdust and grinding debris doesn't seem to know that, though.

I have a long workbench, and sure enough, it's covered with junk. I have to move stuff around to create space.

Here are a list of things I'd recommend, assuming your money tree produced a good crop:

1. Rolling tool cabinet.
2. Rolling worktable.
3. Oganizing bins for nuts, bolts, springs, fitting, etc.
4. A closable cabinet for all your paints and flammable liquids.
5. A nice radio blasting some good rock and roll.

As far as tools, the more, the better