I am thinking of building my coop in a corner of the garage. Never seems to have the cars in it anyway. I am thinking 10x14. Just wondering what to do with floor. It is cement. How can I make it easy to wash? Would I just bring walls flush with floor, or do I need a raised floor? When making those ladder perches how far apart are they so the higher chickens do not poop on lower ones? Can you put an outlet inside coop for heated bowls in wintertime? Should I insulate it? We live in the upper penninsula of Michigan. Any other must haves for your favorite coop?