I am designing my son a shed for his forge and anvil...and all the scrap that goes along with this; and I have been given some used materials for the shed that I wish to use at the maximum area that we can afford to build. Is 10x10 feet enough room? I can arrange it much bigger, but then I would not be able to afford a cement floor. Is a cement floor better or worse? I can arrange it for a larger covering, half walled and half dirt flooring. That would allow us to add more cement, or walls if they are needed. Any suggestions? What did not work for you? Thanks.