Hey, Oz, before you eat those young males........ I have had many Guineas over the years and they are not like chickens.
Mine tended to pair off and became very attached to each other. In the spring, the males like to spar and chase each other to compete for the females but once a mate is chosen, they stick together like glue. It was very sad to see a female, that didn't have a mate, tagging along with a pair. The male didn't mind, and would service the second female, but if she went broody he would not guard her and her nest. The Guinea hens tend to go broody according to rank. They all lay in the same nest, then when there are a bunch of eggs, the top hen will start to sit, and the male will stand guard. Also, the primary female in a "pair and a spare" group would try viciously to run the other female off, all the time. Spare males, on the other hand, spent all their time trying to mate with another male's girl, fighting, and chasing each other.
They would fight and seriously hurt the roosters and also attack and molest the chicken hens.
I think it is better to have pairs, and maybe just a few extra girls, but don't take my word for it, ask around to be sure. I ended up with only three males (the hens will make their nests in the wood, or hide them in fields, and will not come in to roost at night. Something always found them and killed them during the night. The three males nearly drove me nuts, chasing each other, fighting with the roosters and hens, and screaming constantly, so I decided not to get more.