I am going against the crowd on this I think they are female. I have SS the same age and one of mine is a roo for sure. His comb is much larger and already turning red. He also has waddles showing up.
Gladys I think is female, the same for Rosa because at 5 weeks, there should be a little more comb growth and pink coloration to it. Now you just keep your fingers crossed that you don't have one of those late bloomers.