If you are allowed to have roosters and you have the funds,  you could set up a bachelor pad- a separate coop of ONLY roosters. They have all the same coop needs as hens (aside from nesting boxes) but probably need a bit more space per chicken. This makes it so that you can keep all your friendly roos (and look at the rooster eye candy!) without having issues with the hens. This also makes it easy to pick a roo that you think would be good with the hens, once you feel comfortable integrating them (this works if you have waaaaaaaaay too many roos per hen in your current brood) The 1:10 R:H ratio is not a perfect number. This number ensures that you'll get good fertility in your flock, and your hens most likely won't get overmated. However, depending on the temperament of the roo, you can have a smaller ratio and still have peace, or need a larger ratio to keep it calm in the coop. If I were in a position to set things up like I wanted, I'd have a bachelor pad and cull any aggressive roos.