Hello from NY
If you have no intention of hatching eggs or selling fertile eggs to others, I would suggest NO rooster. Your hens will lay just as many eggs without one and will be free of the harassment a rooster brings to a flock. Many are forgoing having a rooster because they often turn aggressive to humans once their hormones start raging. Welcome to BYC.
You may want to visit the Learning center which is full of good information in re: many topics of the poultry world.
- Home in WY
In addition to the rooster info drumstick diva passed on, keep in mind 1 rooster can handle about 10 ladies. If you were planning on starting smaller than that, I'd stick with females.
It's nice to have you here...good luck to you!
I believe the "magic number" is 10 sq ft per bird in the run, and 4 sq ft inside the coop per bird.