Depending on breed of your hens, they're still a little young. My Barred Rock started laying first and the Rhode Islands shortly after. They were closer to 6 months before they started. My Australorp was 5 1/2 months old. First eggs are the cutest! So small and sometimes funny shaped too. My first egg looked just like a rock laying on the ground. Thought it was when I first saw it. Wondered where the girls managed to dig that up from since it wasn't there before I left for work that morning.
Your roo is at the age for molting. Shouldn't have any affect on your hens as far as laying though.