I think the moment you are waiting for is, what myself, and my girlfriends refer to as 'The new normal'. Very hard to define, it is that moment in which you stop getting dressed up as a girl- You're just getting dressed. There's no OMG I'm in the ladies washroom. It's your washroom.
Buying underwear is so mundane that you just add it to the shopping list.
The day you stop acting like a woman, and just being, is a huge stepping stone that cannot be planned, nor can you pinpoint exactly when it happened. You're life has changed and you didn't even know it. At the same time, even trying to be a guy suddenly becomes very difficult, as you can not turn off an act that simply isn't an act anymore. It's being.
My moment of realization that I was in 'The new normal' was when I realized I had not thought about transition, being TS, or some new way to emulate a woman for a very long time. Being.
When you aknowledge 'The new normal', you will also realize that you have been in it for quite a while already. I think the state of 'The new normal' can come at anytime during transition too, it's not determined by surgery, or the size of your boobs. It's about how you have assimilated into your new being.
Good luck. With 'The new normal' comes a whole new feeling of calm. Being.