Either, doesn't matter. You'll have a dominant female, a dominant male, and however many subordinants you want. At least that's the way it works with false percs.
There are rules like these where there are exceptions. IE. Tang school counts. One or three (more than that can be odd or even), not two or they wont have a third party to keep the two from killing each other. This is contradicted by one of our members who has two regals that get along just great.
But as Quary said, 2 would definitely cut down on politics. But in your 525g... um, I'd say you're not so limited.