Here's the thought I've had going through my head when coming out to our son, extended family and friends that could help, or at least it's something to consider. Even if my transition fails for some strange reason or another, (which I'm not expecting), all these people should, even deserve, to know the real me, not the shell I've been "forced" to portray.
Even if your low dose HRT "test" results in not transitioning, do you want to hide this utterly critical part of you for the rest of your life? Wouldn't you rather that the people that you love know the true person inside....so you can be yourself around them? For me, I was just tired of putting up the defense, saying one thing, when I wanted to say it differently, wearing drab, when I was more comfortable in something else. Sure, they may treat you differently (as a woman), but isn't that what you want?