1) Take the SAT's, study how you will learn best. Tell your parents you will do better/learn best with (fill in method here). Combine with discussion about #3 below,
you tell
them that you would like to sit down when they have time to have a talk about college. They'll appreciate the mature approach, believe me.
2) Girl. 84 miles is tough. I'd apply to the same colleges as she did, and go to one of the ones that matches.
For now, get license and permission to travel...
3) Career choice. At 17, you aren't supposed to know what you want to do for the rest of your life (like 5% of people do). Out of 6 kids in our family, our parents "directed" us where they thought we should go, except for the last kid. Guess who is happiest? The one that decided for himself where/what. So respectfully tell your parents there are so many choices that you'd like to explore, that you think you should take a variety of courses once you're in college to see what you are interested in. Got to communicate that having a career chosen for you is not the right move. Turn it around and ask how they'd feel if their parents had told them they were going to have a certain career. College courses? Give them a selection, some math and science to keep them happy to start (there are plenty of them that aren't too tough) and then gradually move over into the major you want. It is your education after all, not theirs. They may threaten to take away your "funding", but will respect you for making your own, mature decision.
Hopefully that helps.