Very pretty birds!
Leghorns are flighty, so they may not tame down as much as heavy birds. If your pen doesn't have a top, you will likely need to clip a wing. I don't think leghorns are very broody, so you may not get chicks, unless you incubate.
Your rooster is so handsome. Sort of makes me want one, but not quite!
How fun to go to a chicken show!