if you don't put the clear topcoat over the paint chips (yup, they are either acrylic or vinyl paint) what will protect them from dirt and wear? After all the work you are going to do, I'd not skimp on the topcoat protection. Your car has a clear-coat over the paint...your floor should too.
I've coated 3 garages (2 of mine and one with a friend) with Rock Solid and love it! It is an easy straightforward application process.
When we ordered kits for the most recent garage, we found that the kit had changed...for the better! The coating materials (A side and B side) now come in...