I did see that the lights were for working with them early in the darkness and not for egg production. I do not do that anymore but when I did, I added the light on a timer in the evening.I turn the light on in the run first. It takes a few minutes to spread the feed around in there then go into the coop. So they are exposed to indirect light from the run first then I turn on the coop lights. No one startled.
With light for production, a low lumen light will work fine.