To start raising quail, 2 pens that are 4X2X2 or one pen 8X2X2. Or would it be too small either way. Also if you have a wood floor can you just use sand for litter? I would be using memory foam attached to the top for protect their heads. I have 3 choices that I could buy locally Georgia Giants Bob Whites or Bob Whites or Pharaoh. Are any of these good beginner birds. Also if my pen/pens are big enough how many would you recommend? TIA