What the poster above said. Also, if you decide you want to give them extra hours of light on a timer, it's better to set it to come on in the morning than night. At night, it can be stressful to all-of-a-sudden be in the pitch black. What if they're on the floor and can't see the roost. If...
Most of my chickens wouldn't let me willingly pet them but I used to go in the coop after they went to roost and pat each one goodnight. You could start with that. Glad you're giving these chickens a better life!