I see where @Perom is coming from. More female ROs will appeal to a wider audience for sure. Having said that, do what’s right for your story.
Have you considered making the ROs gender flippable? Both the Wayhaven Chronicles and The Shadow Society do that (as well as a ton of others like Lost Heir for example). Another by Lucid lets you pick the gender of each character individually. It can be done really well, so it might be something to consider if you want to appeal to a larger audience but don’t want to commit to F!Gods.