Sanna, yeah, probably best to separate out your hen like you did before. The kennel idea is really a good idea!
BUT... an incubator is a lot easier and less worry. I really like my Brinsea. It rotates from the outside, you don't ever have to lift the lid. Let us know how the egg fared. Your cockerel does look blue. There is nothing wrong with being non bearded, unless you just don't prefer it. His wings are more shredded than they should be. I doubt anyone is picking on his wings, I've never noticed that kind of behavior in my own flock... but any number of things could be going on there. But it's too early to know what they will eventually look like. His feet are REALLY feathered, so that is nice! Very nice.
Hopefully his chest and cushion will fill in. He's young, so that is a ways off. You want his cushion and tail to come in and pouf up-- the judge pointed out when I was clerking at the last show that some tails just slope right down like a slide, which isn't good. But he's young-- so that could still come in.

