If I might make a suggestion, perhaps instead of deciding a set number of M/F or F/F encounters maybe a better option if this project will be a longer one would be to add an option to filter if you see only M/F, only F/F, or a mix of both M/F F/F content? I've seen a few games with more rigid story lines basically make male and female versions of central characters to facilitate the plot flowing naturally.
Edit: Also as a big fan of goblin/orc women, I like the green.
Edit: Also as a big fan of goblin/orc women, I like the green.