Mine seem to be quieter since I have the automatic door opener. They can go out and roam first thing in the morning. (Before I had the opener, I think a couple of them figured out if they sung the egg song, I would come running and let them out)
I understand you are trying to be a good neighbor. IMO though, if they aren't making noise until after 8AM, I wouldn't worry about it. I think 8 is a reasonable time to make noise. (heck my neighbor fires up the blower at 7) Now if they were doing it at 6AM, then maybe you should be concerned. Again, that's just my opinion.