They all should be okay together. I would worry about the drake trying to mess with the chickens. Do you have a light or anything in thier coop? The reason I ask is because if they are cooped up all night with a light on the drake is likely to get bored and harrass the chickens if he can reach them.
The two brown eggs look like they came from the same hen so one is for sure laying. The big white one looks like a duck egg, does it have an oily smooth texture?
I agree with the color and the breed but not the gender. I am going to go against the grain and say they are all girls. None of them really have roo-ish characteristics. The combs are small and bright red so they are probably older. The neck feathers are pointed and glossy because if you ever...