Hi Kylie,
Welcome to the best place in town. All I can say at the moment is, you need a hug.
There are some 8200 wonderful people here I've been told, so consider yourself hugged. And if you need more - just ask.
Now for the good news. You have no choice. Only management issues (wife/children), nobody else (friends/etc) at the moment. Sorry to say, you can't go "either direction". Water only flows down hill. You've already experienced denial and from what you've said, it's no longer an option. Denial is tantamount to death. The only difference is you hang round for 60 odd years making life miserable for yourself and everyone around you.
The only way you are going to survive is to accept Kylie (meaning - narrow land. You'd know better than me on that meaning) for who she is, and then work on your management issues prior to your transition. Anything else is a waste of time, money and resources.
I apologise if I appear to be a bit hard nosed about this. I'm a bit more than 34 and have a wife and 3 kids and have wasted a lot of time, money and resources kidding everyone, including myself.
From what you've said, it appears you were always destined to be a woman. And given the right opportunity I believe you would make an exceptional one. What you have to understand is, you are, by virtue of brain gender, a woman operating in a mans role. That simply just doesn't work. I've tried it and I failed!
Being a parent, I think you have to ask yourself, what type of role model do I want to present to my children; a fake "regular guy" (whatever that is) or the woman I was destined to be. Your children are still young enough to adapt, providing they are given the opportunity.
At 34, there is still time to make a life for yourself and everyone around you. Leave it to later and it becomes exponentially harder on yourself and everyone else. You already appreciate this is one heck of a rollercoaster ride.
Start next Monday with an appointment with a counsellor and between now and then, have an enormous bloody big HUG. Let us know how you are coping, and keep in touch.
Be safe, well and happy
Lotsa luv
Catherine