Getting back to your original post, and I don't like my original response it sounded condescending and I did not intend that...
I do live the life you described as your goal, stealth in my birth gender around the kids, particularly the one that can't handle my transition, and privately fully transitioned or at least very obvious, but within my wife's acceptance levels. In moments where I am alone or with the two accepting kids I transition all the way into Satinjoy, fully expressed, female psyche let loose and all of it.
For me it is not difficult to do the different exterior presentation modes. I don't know and cannot know if that will change later.
What helps me is I am clear on the female physical programming in me, the female center, and that does not have to be hidden. I am always transwoman under the surface presentation, and very happy with that.
So far it has worked very well, although the startup was very painful to find what works for all of us together in the family.
I think it would be a lot different if I desired to do full time transition. I'd lose half the family.