Welcome to the forum. Congratulations on purchasing your home and 1 acre. You can grow a LOT of food on 1 acre. Chickens are a great addition to a homestead. If you only have hens, they are fairly quiet and won't rile up the neighbors like a rooster crowing at 3 AM will do! For many years we lived on a small city lot, almost downtown in our little town and I kept hens and gardened. We moved 3 1/2 years ago 160 miles to the Tyler, tx area to be near to our grand children.
These are my suggestions; build a walk-in chicken coop with a dirt floor, large enough for 20-30 hens. Add a good run to it. You are thinking that is a LOT of hens, but when you are raising replacement pullets, there is an overlap for several months. What I used to do was to buy 6 sex link chicks or other breeds, each spring at the feed store. In the Fall, I butchered 6 old layers. So for awhile, I had 18 hens. I kept the hens through their first molt usually at 18 months old, until their 2nd molt at 2 1/2 years old. Then I butchered them. So I had a rotating flock, each spring I got a different color of chick so I knew what breed/color was the old, middle and the new hens. So each Fall, the newest hens would start laying, I had eggs through the winter. The middle aged hens went through their first molt and stopped laying and I slaughtered the oldest hens.
Now for the compost part of having chickens. In the fall, all these nice people rake and bag leaves and set them at the curb for the garbage man. Those leaves are valuable. Pick up all you can and take them home, dump in coop and run, the hens will love them. In a short time, they will reduce them to mere inches in depth, they will scratch them apart and poop all over them. Garden gold! When those leaves are reduced down, add more bags of leaves. I've had leaves up to 3 feet deep before!
I saved all kitchen trimmings except citrus and onions, and tossed them in the coop. What they didn't eat, they made compost out of. Garden trimmings also went to the coop/run. Sweet potato vines, corn shucks, pea hulls, you name it!
This will reduce down to a fine black crumble. I dug mine out a couple of times a year and put on the garden. Sometimes after I scraped it up, the bottom would be a little smelly, I just sprinkled it with garden lime and added more leaves or whatever I had. Sometimes I bought pine shavings (for horse stalls, but not the scented stuff) and sprinkled a layer of those. Your chickens will be a great asset to the garden!
Since you are on a slope, you will want to make sure that water does not run through your coop and run. Wet chicken poop stinks! Plus, you don't want them living in mud, every animal deserves a dry "home" and a place to get out of the weather.
You are wise to start small and build from there. You might want to draw a map of your land and design where to plant fruit trees, berries, grapes, garden, etc. You can always change your mind and move things around.
Most of all, welcome to the forum and have fun on your new adventure. We will have you canning vegetables, chicken and making chicken broth in no time! Start a garden thread, post pictures and we will help you all we can!
You might want to put your general location in your avatar. It helps when you ask for advice on gardens and such. What works for me in Texas might not work for you on a mountain in Montana. LOL