Alana,
I agree with Kathy 100%. What you need to understand is that everyone transitions in their own way. Some will not take hormones, some only hormones, and some will want more (surgery). Only you can decide what is right for you AND you can change your mind later.
Maybe after trying hormones for a year, you might decide you want to try adding something else, maybe a name change, or a change of hairstyle. It is your life and no one can live it for you.
If you try the hormones route first, understand that once you have been on them for six months, things start to become permanent. Use that time to see how you feel, and how you feel about the changes that are happening. Do not be afraid to pull the plug and decide medical transitioning is not for you. It isn't what everyone wants or needs.
Definitely talk to your doctor. They can tell you more about what to expect, what the risks are for your medical history, and any warning signs that it isn't right for you. Ask a lot of questions so you understand it well.
The first step is always the biggest and the scariest. But it can also be the most fun and exciting!