While the premise certainly looks interesting, I’m very worried by the balance of sexualities among who I assume are going to be the ROs… 
Only one option for gay or lesbian players is not balanced, especially when you have six characters to work with. I’d certainly recommend that you made all of the characters bi/pan- or MC-sexual. It’ll be more enjoyable for non-straight players (and there are a lot of us), but also easier on you, since you won’t have to keep checking genders. 
Also, it will make it far easier to fit non-binary players into the game.
Anyway, good luck with the game. 