Trans MTF Sim need

As someone involved in that topic, I absolutely don't get what you want here. You want to play a female Sim (one who wants to be female as well) but reject using a female or even androgynous female body, even reject adjusting it? I am very sure, that at least most of the trans persons would be very happy if their body looks the way they want it to look, fitting to their actual gender. I also know that a lot of trans persons find it very traumatizing when their body looks exactly the opposite way and I also think they don't want to be remembered that they were born in a wrong body.

But hey, it's your game, so have fun.

By the way; editing traits with full edit mode does not work that well. You can remove the trait, but in-game moodlets belonging to that trait still appear once in a while.