Ok, chicken house is just about done, still have to put nesting boxes in, some roosts and I think I'll hang the feed and waterers. Question #1, the chicken house has a full size door that will be on the outside of the run, people access only. I want to put a ramp for the chickens and a cut out on the "pen side" and leave it open all the time....??? The pen will be predator proof as I plan on getting a trencher that will hopefully dig a wider "trench" so I can bury the fence down at least 6 inches and also out about that same length. I also plan to double up on the chicken wire at least 1/2 way up the pen and of course cover the top also with wire. Ok to leave the small opening for the chickens open all the time? Also, is there a trencher out there that will trench out wide like 6"??? I plan to rent one....I have 16 pullets, will 4 nesting boxes be enough or should I go with 6? And can I stack the nesting boxes, like two a foot off of the ground of the coop and then 2 more boxes above those? Thanks in advance for your advice and tips!