The problem is, buyer's remorse of post-transgender ppl is pretty high. There's a sense that all problems will be solved, but that really isn't so. Romance, jobs, and other things still are issues. Plus, it's enormously expensive.
I would recommend anyone thinking they are a transgender girl to make a concerted effort to try to fit in as female without surgery. This is what that year of passing is about. Some people don't actually need it. They just need legal confirmation of their female status.
For the most part, being fluid is far more satistfying.