Some of these answers are great, but do not take into account the fact that OP has limited space and experience. In my opinion, her ratio of hens to roos is likely to be problematic for her because of these factors - not because of what's natural for chickens. Her question was, will the hens be happy with this ratio? In my estimation, given her lack of expertise and limited space, probably not. If she were comfortable handling any problems that might arise, or even spotting such problems; IF she were set up with a bachelor pad, IF she were comfortable stepping into the middle of a rooster mash and separating a couple of fighting cocks before one got hurt without herself getting spurred or losing an eye - then sure, this could work. But I don't think she is. Hens' happiness aside, I question whether she is going to be happy with the arrangement. And no, I don't think she is. She needs a few years' experience handling one rooster. Then she can try multiples if she wishes, and her chances of success will be far greater. Probably none of you rooster wranglers jumped right in with multiple roosters right out of the gate, and if you did, I'm betting it wasn't a smooth and painless experience.