Welcome to BYC. It sounds like you are already on the right track with your run. Some other essentials are to have a predator proof coop, free of drafts, but with ventilation holes in the walls, close to the ceiling. And also, as I am sure you know, to have your brooder all set up and ready to go for the chicks. That means some type of container, bedding that they won't slip on, a heat source, feeders, waterers, and perhaps a chicken first aid kit. For the heat source, I've heard excellent things about chick heating plates over the traditional lamp, so that is something to look into. Best of luck!