Welcome from Kansas. I see one little problem with your plan....you say you'll let your hens have chicks in a couple of years, but if you're not allowed roosters their eggs won't be fertile.
Maybe you're planning on getting fertile eggs and letting them set on them?
Yes, I would get fertilized eggs and let one of the hens set on them. That's the ideal, anyway. If none want to be broody I'll have to come up with something else. I don't want to raise chicks myself, that's how I'd end up attached and wanting them to live inside!
Or - I've read that you can't introduce new hens to an existing flock - but could you introduce a rooster to an existing flock of hens? I'll have to research that. It would take several days or even weeks for someone to complain to the authorities, for them to take it seriously, and to receive the "you can't do that" letter - at which time I could send him back to whomever I borrowed him from. Theoretically, that is.