Hello, one of the judges here.
In terms of putting up here, it should be fine as long as it doesn't violate Itch's policies and you label it accordingly. In terms of judging, it should be pretty self-explanatory that the score will kinda depends on the ratio of sex to preg. Also, no like, animal members, but that should be pretty clear.
I hope that that answers your question - feel free to respond if you need further clarification.