I would personally only keep one male in there. 1.2 is the ratio I would do. However, sometimes with just 2 girls, you can run into a "feast or famine" breeding snafu where you have two litters at once and then nothing for a few weeks.. maybe seperate the females and rotate the male, so that the girls will have their babies at different times? Or even better, get 1-2 more females and rotate like that, and you should never be without babies. This is what I do. I have 1.6 and am "in the rats" most of the time.. and this is feeding 8 snakes.. but I do freeze the extra ratlings and thaw/feed when needed.