pole shed questions

I built a 40x60 pole building with a 16x60 lean on one side two years ago. I insulated the lean last fall and heat for my shop. Floors were poured as soon as shed was up with foan insulation under the cement. I have added another16x60 lean on the other side for cold parts storage. I like the building and dont think would build it any different for my use. I agree with FISHYPETE with do the floor right away.