Ok, my 2 chickies are now almost 4 weeks old, I'm working on the coop/run and I'm starting to think about what kind of feeder and waterer to use. Part of the run will be under the raised (3 1/2 feet) hen house (formerly a playhouse), and so somewhat protected from weather. I'm thinking of putting water - hanging? - ONLY in the run, but am not sure about food. So. My questions are: 1) Should I ONLY put food inside, ONLY outside, or both? The hen house itself is 4' x 6', and tall enough for me to stand in. How much food mess are they likely to make inside? 2) With only 2 hens, should I get the smallest sized feeder and waterer? Seems like with the bigger ones, I might have problems with mold and/or gunk because the food/water would stay in there longer. In the brooder, I have been using the metal ones that screw onto a glass quart jar. I can still use those, but like the idea of hanging the feeder and waterer. 3) Pros and cons of metal vs plastic? Any brands better than others? Any advice will be greatly appreciated!