Is it a good idea to move out at 16 given these cirstances?

Your aunt and uncle can get guardianship over you if your folks agree. Its not adoption or emancipation, it just means your aunt and uncle agree to take care of and be responsible for you. If you've been unenrolled from your school, you will have to have a parent or guardian reenroll you. Its understandable you want to finish school with your friends. As well spoken as you are, you should have little issue persuading at least one of your parents. You can google "guardianship forms texas free", download one, edit to suit your needs, print, have a parent and your soon to be guardian sign it, notarize it, and you should be good. Since you're staying for educational reasons, maybe you could add you can stay a long as you keep a certain G.P.A?