Hello!
I'm reading a lot and I'm trying to decide wich chicken would be the best for me!

I want chicken mostly for their eggs. I don't want breed like the ISA brown, wich has a lot of health issue and doesn't lay for long.
I was looking for a chicken that was good egglayer and for a while too ( More than 2 years...)
I know that the number of eggs will drop, but I don't need them to have 5-6 eggs a week all their life either.
Also, if the chicken could be nice with humans, that could be a plus. We have a daycare, and it would be great to let the kid approche them some times.
Finally, they won't be free range. My city refuses that. I live in a rural area, so we are making a coop and a run, and they will have the chance to walk around when we are outside, in a enclosure with grass and more room. So I need chicken that can tolerate confinement quite well.
Here are the breed I'm interrested into:
-Plymouth Rock (They seem like good layers, really friendly and hardy, wich is great, since my winter are REALLY cold)
-Sussex chicken( Good layer, really pretty and seem friendly too)
- Wyandotte ( Seem to be a good layer, a lot of good reviews)
-Australorp ( I reaaaaally like their black color, SO pretty! I also read about a hen that was still giving eggs, even at 5years old, wich is great!)
-Silkie ( I adore their funny look, and people tell me they are good layer, and hardy in winter)
So, tadaaaaa!
Thoses are my possibles choices.
Could you give me your opinion, preference also?
I don't want an aggressive chicken against other chicken.
I won't have any rooster ( We are not allow too in my city) so only hens.
We are planning on having 3, maybe 4 if we manage to make the enclosure big enough. Should I get only 1 specie, or can I mix them?
I know, that'S a lot of reading and questions lol
Thank you and sorry if I made any mistakes!

Trying my best with english!