This is weighing the impact of two high speed Mazda crashes.
FTM she's going to come out to your son and all sorts of creepy loaded conversations are going to be happening because she wants your kid to troon out and will do it with emotional manipulation and confusion because she just has to share her story with any captive audience around her. It's not going to be possible to tell which one that wants the job actually has genuine gender dysphoria aka "truetrans". It's way less effort for FTMs on HRT to transition and get to some level of passing, so there are a lot of semi-passing FTMs who don't have GD at all, they transed themselves to mask their other mental problems.
MTF - let's assume you know what is actually trans so you already know to screen out the womanbeards, the weirdass pronouns, and the party city wigs. The fetishists don't really put effort into this because they're not transitioning, so they're easy to spot and filter out. Your chances of finding a sane tranny are higher in this category. But even then, like 90% of MTFs today are fakes and the crossdressers snuck themselves into this label.
It's gonna be MTFs. If you're living in some area with a lot of white wokies you had best just avoid doing this at all.