Having a bit of experience with concrete laying, I want to back Jason's directive-- the new shop slab is a week old, has attained about half of its ability to support heavy loads, can handle normal foot traffic.
But...it is still not yet optimally crystallized, its minimal crack resistance is even weaker, the surface can be gouged and scraped easily.
What now exists is such a great $10,000 improvement, needs more of a 'set' to withstand shop use, will be well worth it.
I'm thinking by Columbus Day should be the time to begin using it as intended, starting with that barn dance!