I was very interested in these responses myself, as I am in a similar situation. I have two sons, ages 9 and 12. I separated from my wife a couple of years ago, and she now knows about my gender issues and is definitely not okay with it. My biggest fears about transition are alienating my kids and, of course, work. I work in the defense industry, which is notoriously conservative. I can always look for another job, but I can't change children, nor would I want to.
I am playing for time. I have been very careful to change slowly. I started seeing a therapist last August, and started growing my hair long, getting my ears pierced, and getting electrolysis done on my facial hair. So far, I can pass as an aging hippie, lol! I'm 57, and wondering if I can string this out until an early retirement at 62.
Next week I have to come out to my primary care physician, as I need blood work done for my first visit to an endocrinologist later this month. Starting hormone therapy will be a big step. Either I will be convinced that transition is right for me, or it will prove unappealing mentally and unsustainable physically. We shall see. As they say, life is what happens when you are busy making plans.