Hi Nathaniel,
Welcome to Susan's. You'll probably find it to be the warmest and most friendly family on the Web, bar none. Particularly if you are always up this late (04:26) or early as the case may be.
I'm really pleased you have been able to discover your real self, so early. Your thoughts of finding a therapist are the best thoughts you can have. It sounds like you have a close knit support network already. Keep it up; you'll need them.
If you don't live in Sydney, and are not sure where you can find your local Gender Centre, you can always ring the Sydney one and they can put you in contact with your local. Sydney number is 02 9569 2366.
Hope to hear more of you as time goes by, in the meantime, ask whatever questions you like. The amount of collective experience from those that have "walked the talk" is amazing.
Be safe, well and happy
Lotsa huggs
Catherine