Welcome teabiscuit.
I have addressed this topic at http://jwfacts.com/watchtower/homosexuality-gay-jehovahs-witnesses.php
To get baptised you are expected to go back to your "biological" gender.
“Mutilating the sex organs, such as having the male organ surgically removed and an artificial female organ created, does not change the facts or make the person into the opposite sex. Someone desiring to be baptized who has already undergone a mutilating operation of this sort (a transsexual) would be expected to take his or her place in life in accord with what the individual biologically is, not in accord with what the person has been mutilated to appear to be. This may even require that the person leave a “mate” to whom the person is “married,” since the mutilated one is actually (biologically) of the same sex as the “mate.””Correspondence Guidelines (2011) p.98
You really need to get out of that religion as quick as possible for your own mental heath. You do not need to join a high control religion to worship Jehovah, particularly one that refers to you as depraved and mutilated.
My best friend is an exJW and transgender. If you ever are in Sydney Australia it would be nice to meet up.