Welcome!
Why are you hoping to start with adult hens? Anxious for the eggs? The easy way I started was ordering chicks from a hatchery. I got 6-wo chicks the first time.
The advantage of a hatchery is you can get exactly what you want in terms of breed and sex. And you have a guarantee of the quality of the birds. You have to wait for the eggs, of course, but only for (an agonizing) while. The
first time. And then, when you add chicks in the future to renew your flock, you've already got layers so you won't even notice when the newbies start.
What you didn't ask about is housing them. You've got to make sure they'll be safe from whatever predators and elements. Got that part covered? If you're just starting out commit to the biggest and most secure coop and run that's practical for you. 'Cause you'll find yourself with more chickens than you imagine now. Start by investigating what your predators will be and plan based on that. Also, where will the winds come from? You want lots of ventilation but you want shelter from wind-driven snow and rain.
Are you planning supplemental lighting to increase your egg yield over the dark months? Give some thought to some solar panels or electric source. They'll come in handy if you have to keep the flock's water from freezing as well.
You're lucky to have so much property! Your concern for your neighbors is admirable but probably unnecessary as hens aren't particularly noisy nor is their "chatter" especially objectionable. In fact, I LOVE it! Listening to my neighbor's chickens (we're about 20 yards from their coop) is why I wanted my own initially. Still, you've chosen well. My Orps and Wyandotte are good consistent layers and delightful birds. BUT there's a world of colors and eggshells out there and it gets hard to stop wanting more and more!
Again, WELCOME And it will be fun to follow your start up adventures.