hi..we're in the process of building our first chicken coop....it will be 8 long x 6 wide((- 10 inches for the with of the nest boxes)) x 5 high...for 2 rir's, 1 white rock, 2 black sex links.(they are 5 days old now)..is that a big enough coop for them?..also..for nesting boxes i have a old bed headboard with boxes already built in that i really want to use....the with and height of them are about 12 inches..but the depth is only about 9-10 inches in..are they deep enough for my size chickens to lay in?? ..also..for our roof i wanted to put this clear plastic panel stuff usually used for like patio roofs etc... but now i have been reading that chickens wont lay if it is to bright in the coop..?..but then again..i heard..they need the light in winter months to keep them laying?..so i'm confused..;o)...any help will be appreciated..thanks