After all, you are not a legal adult yet. You will need parental permission to start the medical stuff anyway.
A therapist could help you better communicate and work with your parents. It may be your quickest path.
Call LGBT centers near you. Ask if they can reccomend therapists or if they have group therapy or meetings.
Really, make a list of questions before you call. Anything and everything you can think of that they may be able to help with. Do NOT be afraid of telling them you are a trans youth and about your situation. If you feel better with not telling them your full name, give them a fake one if they ask or just your first, or your new name.
LGBT centers are more likely to be set up with someone who will help you work towards your goals. In a community like you are near, there should be at least one LGBT center. It is certainly large enough.
People think therapy is to fix broken people... HA! Sometimes it is just having a paid advocate in your corner who you get to talk to once every week/month... whatever.
Also, one on one therapists will typically talk with you for 30 or so minutes before your first appointment. It is a great time to get to know them. If you don't like them, try another one out.
Most of these first steps can be done over the phone too! So you don't need any rides yet.