Make sure you seal the floor. A bare concrete floor can be swept a million times and you will still fill a dust pan. There are some nice floor paint systems out there.

The white top for the workbench is a good idea for cleanliness and seeing small parts. I would also have a hardwood area for heaver work. Like if you need to use the old 2lb calibration tool. That is also a good spot for the vice and maybe a drill press. For occasional use, Harbor Freight has some very inexpensive ones. Replacable benchtops would be an idea for long term if you are picky.