My advice... DON'T.
The first thing they do is break you down mentally, to rebuild you the same as everyone else. For you, it will mean being like every other girl there. If the uniform of the day is skirts, you WILL be wearing a skirt. Everything is about being like the others, and you aren't.
Pretty much every former military person I know who is TG (and at least knew in the back of their mind at the time), has all had the same problem, MAJOR depression about the time you complete basic training. Not just ho hum depressed either, this is nearly a breakdown.
Then there is the risk. As Kurzar said, don't date women.
Honestly, that doesn't go far enough. You will need to date men. If you don't, they will eventually question you. You spend so much time around these people, that you end up knowing them as well as or better than their spouse. They will notice something is off, the only saving grace is that there ore quite a few "off" people in there.
You have to also keep in mind how it will effect G.I.D. You are being forced to conform to something very against who you are. Your brain will rebel. You may think you are fitting in, and actually getting further and from it. You don't have the choice of going out as a guy as a coping mechanism either. Not without a good long road trip, and even that is sketchy at best. I knew people who knew every place you could get a drink within 250 miles of base, they had been to all of them.