Glad to meet you, and welcome to BYC. I love that saloon design! Your daughters will remember their chicken time fondly, I am sure!
Since you had chickens before, I am sure you remember that everybody (especially kids!) needs to wash hands after handling poultry, lest they pick up salmonella from apparently healthy birds.
And if you turn out to have any roosters among your flock, as they reach sexual maturity, you also probably remember that they will get very protective of their ladies (and maybe fight each other if you have more than one). So keep your little one from running or jumping around in the area where the chickens are once you know you have roosters. They aren't mean so much as they are protecting their harem. Unfortunately, toddlers are right at a level to be seriously injured and frightened by a rooster attack.
What an awesome flock you have, with Wyatt Chirp to watch over their saloon!