I think the big question begging to be asked is how far out in the boonies are you? Outside of a major metropolitan area, finding a therapist who even knows what a TG is is difficult. One that actually is knowledgeable of some things TG even rarer. A gender specialist, forget about it.
I moved from just outside NYC to hillbilly central. The nearest TG group to me is 90 miles away. Even in that city which is perhaps 90 miles from Washington DC, the other group members lament how they all had to do a lot of "Teaching" to their therapist. Even for me, seeing one who was recommended and has or had several other group members as clients I used to be surprised at his lack of knowledge of some of the nuts and bolts things a TG knows.
Fortunately(?) for me, what drove me to see him had about everything to do with life in general and hardly anything TG related. I needed someone who was a friendly and had some idea what we go through and how all the baggage kills us. Transitioning was not my goal. In many ways just the opposite was my goal.
So.... My point is if you are in a similar predicament, odds are pretty good that you are one, if not the only, TG client he has had. Odds are good, without a recommendation from other TGs in the area, about all therapist will need to be taught.
If you aren't sure over what direction to go or need more answers to questions you haven't learned to ask, then you'd best find a very big city nearby with a well established TG clinic for a gender therapist.