You can keep bobwhites in 'coveys' with several birds of each sex during winter. In the breeding season, you will most likely need to split them up in pairs of opposite sex. So you should either get/make two more enclosures and get a female for each of your males, or get rid of two males and get a female for the remaining one.
You can't just get 3 females, put them with the males in the existing cahe and expect all to be fine - they are likely to kill each other.
I'm not sure how much aggression you should expect if you just put a single male and female together without introduction first - I'd probably put a divider in the cage for the first week or so, so they can see each other before you let them live together.