don’t have chickens yet, but I want to be educated before I start.

so me(24) and my fiancé(23) bought some land for of his great grandparents and right now we’re saving money to build a house on it.
Until then, I want to research on getting ducks and chickens. specifically I want to get Cayuga ducks. I know that for sure. And I have an idea on what chickens I want, but that is subject to change, depending on what I find when I research if they’re ok/thrive in my Climate.
So I guess my first question is do I need a rooster if I’m not planning on selling hatching eggs or hatching eggs myself?
and how much yard or space do I need per chicken? I’m unsure the square feet that we are being given, but I want to adjust my expectations so i don’t go full crazy chicken lady.

I like getting advice from people who have actually experienced stuff so that’s why I’ve come to here. Thank you Reddit.