Good for you for getting out as yourself!
I can so relate to your early experiences, knowing but not knowing, fear of what others would think, etc.. Even the quietness that comes from being out in the world, I felt exactly the same way.
Try to get out as often as you reasonably can. The more you do that, the more the fears will settle down. And as the fear settles down, telling others will become easier.
It is too bad that therapy of off the table, because, as you know, that would be my recommendation. But, honestly, it sounds like you know what you want, and you know what you have to do to get there.
Being genuine, as you say, is a major stress reliever. The situation has not happened to me, but the fear we all have is someone coming up and saying loudly, "You are a <T-word>!" As long as I was not being genuine, this would have stuck fear into my heart. And, even in future, if I attempted to go stealth, it would again cause fear. But, as I am today, I would just say, "Yes, Iam. So what?" OK, I would still feel fear, but so much less than the other way.