If you doesn't feel right to you to pick a gender, then don't.
Seriously.
I was born apparently male and thought I was male until just a couple of years ago (age 47?), when I realized that I was sure I wasn't male (at least as is commonly understood), but that I also didn't feel that I was definitely a woman. I started gender therapy last fall; the therapist emphasized that I should not label myself and then act according to the label: that instead I should explore and find out what was right for me at this time. It might change, but that's normal; people keep changing.
It doesn't feel to me like I want to do SRS, but I do feel like I want to try "immersion" at some point.
To the extent that I have chosen, I have chosen "not male" -- but that doesn't mean the same thing as "female". There are androgynous people; "gender-queer" people; gender-f*ck; those who would actively work to break "the gender binary"; those who feel they are outside gender; the asexual; and a wide variety of others.
I've been many places in town (certainly everywhere around home) as a mixed-gender person, and the great majority of people treat me well. Nearly everyone still calls me "he" even when I'm in a dress (sigh) -- but on the other hand, a surprising number of people go out of their way to talk to me: in their way, welcoming me, accepting my female side. At present, the smiles and waves are more important to me than the pronouns.
