Beautiful birds! I love bearded chicken breeds. Do they lay colored or tinted eggs? My first EE was a hatchery chick that was gifted to me by a family member and she layed and cream colored egg. I was kinda disappointed with the egg color but, I wasn't surprised since she was from a hatchery. I have a few young EE mixes that I hatched myself and the eggs that they came from where a very pretty blue, so hopefully some the hens will have that same egg color.
I live in Florida so I don't have to deal with anything winter related unless I have really young chicks outside on a particularly cold night. Most chickens can deal with below freezing temperatures quite well I believe. The biggest thing is to stop drafts witch I see you have already done. I obviously have no experience in the winter department so this is all second hand information that I have never done before. But, I think your doing a pretty good job!