Before people begin fantasizing about heritage birds and breeding them, let's take a moment for a reality check. It seems the beginners who live in the city, who are limited, by ordinance, to 6 hens, allowed no roosters, who have only had chickens in their bathroom or backyard tiny coopette for just a few weeks, ought to really master the whole keeping of birds first. I'm trying to say here what needs to be said, not necessarily what folks want to hear.
Use some hatchery grade hens to practice on. Get used to raising out chicks, integrating birds, living with them for a few years and experience the entire cycle for a couple of years. Feeding, coop cleaning, life, death, euthanizing, disease, the whole deal. If you succeed with those hatchery birds and still want to do this in two years, great. Until then?
Sell your city house and buy yourself a place in the country where you really can breed quality birds, keep crowing roosters, learn all about rooster behaviors up close and personal, build multiple coops, pens and barns. Meanwhile, sit in on some local breed club meetings. Go to regional APA sanctioned poultry shows, look at the fancy birds, submit to a mentor, meet some people, and spend a whole lot of time as a student and spend a lot more time just listening.
Otherwise, this is all just an internet fantasy.