We eat ours. My advice is, once you recognize a cockerel, don’t handle it, don’t name it and don’t turn it into a pet. That makes processing day much easier for me.
The best “rooster to hen ratio” is what works best for your flock. The 1:10 that is often quoted here is not a hard rule. That’s what the large hatcheries use to ensure optimum fertility. Smaller backyard flocks are a whole other ballgame. In a flock your size, one would be able to cover all the hena without any problem. May I ask why you want to have a rooster?