Change of domicile issues/college questions?

I am a 17 year old male living in Michigan, with a younger brother who is 13. Our parents are divorced, and my mother has recently made the decision to move to Tennessee with her boyfriend, as she has been unemployed for nearly one full year now, and her job has been terminated. I am currently finishing up my junior year in high school, and she wants to move in the summer some time, in June or July. Her main focal point for me moving is that I could receive a Hope Scholarship simply for going to high school there, 4,000 dollars a year off of college tuition for four years. Are there any similar scholarships I should research in Michigan? And what are some places I could apply for them, simply to show her that I don't need to sacrifice my senior year of high school for a scholarship, when there are more out there..if there are. When this school year is over, I'll have a 3.5 gpa and a 29 on the act. My mother made 18,000 dollars last year, and she holds majority custody of me and my brother. Is there any way that I could also live with someone who is not one of my parents, legally, for my senior year? All I really would like to do is finish, and it is rather selfish I know. I'm sorry if some of these questions are obvious, my mind has been in a haze after all of this, on top of my father having a brain aneurysm. Thank you for whatever answers you can provide for me.