We have done concrete counter tops for kitchens. Some very durable stuff. The clear coat on the top finish is of 100% solids epoxy. You might look into this stuff if your budget allows. It's a two part mix 50/50. A cave man can do it if the cave man that poured the floor did it level to start with. This stuff lays flat and you can make it as thick as your pocket book allows.
Small Block