You do need to talk with a dr even more on this one. I've done a lot of research on this subject since I lost my natural testosterone. In my 40's, it's important to have either testosterone or estrogen compounds in your body to maintain healthy bones for just a starter.
at such an early age, you are going to go through a growth cycle that most of us would love to relive now that our gender has been addressed.
Look, you only get one chance at this to make it perfect. Get professional help, set goals in your life where you want to be with your transition, then work at keeping them.. if you take the wrong stuff at the wrong time, it will interfere in your transition. But going the path you want missing both t and e, you really need close monitoring. That is an even harder road to take, but we see why you are doing it.
Please ask for help here, but don't try this one yourself.. research this before you go further at least.. we are here to help you;)