Daw, thanks guys.

Wall of Text incoming.
I've wanted to be girly from a young age. (dressed as a girl for Halloween, played the female characters in video games, etc.) But, I couldn't really tie my depression and need for femininity together. When I was 17, by the magic of the internet I realized I wanted to be a girl, but I was afraid and pushed it out of my mind.
Things have actually gotten much better since; perhaps because of the testosterone, I've gotten into playing sports, exercising, and having sex with women. Also, it's much easier to make female friends in high school than college, due to the bigger social pool, my self-confidence, and the fact that I've come out as bisexual (which isn't really true). Generally, the hornier I am now, the better I feel about myself, and I don't know what I'd do without libido.
I still feel like there's lots of progress I can make on the "man timeline" of my life (getting cool toys, having more sex, becoming a person of power) and I feel like I might really like it. At the same time, I'm worried that gender dysphoria will ruin all of it, especially as my testosterone wanes in later life. Even though I often feel like I "need" to be a girl, there is nothing about the girl lifestyle that really appeals to me any more, and I don't know what I'd do with myself after I changed.
My parents would be supportive if I came out. I have $10,000 saved up, and am about to graduate with an Honors degree in Computer Science in a state with transgender discrimination laws, so I know I have the capability to transition. I just need to figure out whether it's the right choice for me.
Also, I get an afro when I grow my hair out. Does this mean I would have to get a wig?