In the process of setting up my small coop for roughly 6 hens. Coop is 8 x 4 and run is 8x 8. Looking at waterers and feeders out there. Are the plastic ones the easiest? I would guess the metal ones would get awfully cold for the birds in winter... or me for putting food in. Feeders hold 3, 11, 22 and 50 lbs of food. I plan to change it daily so what size do I need? Waterers are 3 or 5 gallons. I saw one that plugged in that was a 3 gallon for $35 which might be good in winter but is it big enough? Or one inside and one outside in winter? Any help would be appreciated!