Greetings All!
I too, am trying to maintain an old-fashioned flock like my grandmother once had; letting hens raise the chicks and (trying to) let nature take its course. We had a neighbor give our 9 yr old son a hobby flock of 7 hens and a rooster back in early May, and away we went.
We had to hustle to come up with a coop for them and ended up using a 10x10 steel garden shed with no doors, and a re-purposed 10x10 (dog) chicken run attached to it. it sits direct on the ground, sand floor. We usually scatter hay/straw around the run area as it does get muddy when it rains, even tho we have a tarp stretched over the run area for shade and rain protection. Took several 2 in diameter branches of a good length stretched across the chain-link for day-time roosts. Inside the shed, we ended up using a big wooden box to store the hay in, with a plywood top on it, and ALL the chickens get up there together and snuggle in for the night. We tried to put up a couple roosts inside the shed, but none of them were acceptable, they'd rather hang out on top of the box.
The nice thing is we only have to "muck it out" when the heat starts drawing flies (by the thousands), or if it starts to smell. Just rake it up, move it out to the burn pile (the hubby says too much smell to allow it to compost), and lay down a fresh scattering of straw. We're on a rented lot, and the landlord has allowed us to do this as long as none of the neighbors complain about it. Everything has been constructed to be dis-assembled incase we move to our own property.
I do have a suggestion for your bird choice: We have 3 New Hampshire Reds in our flock, two hens and a rooster, and even the rooster is mellow. None of them are hand-trained, but all are tolerant of everyone/thing else that shares our home.
I've got 4 dogs, about a dozen cats and kittens, 4 kids including 1 toddler around the chickens daily and other than an occasional pecked toe the chickens don't act threatened by the kids, dogs, cars, etc...
Right now I've got a White Leghorn sitting a group nest and so far two chicks have hatched out. I'm not one to worry about what breed they are, and don't particularly care for fancy breeds. Just good-ole home-grown chickens for table and eggs.