Switching high schools senior year..

So I live in Louisiana and am a junior in high school with about a month left until summer. I want to go to the University of Houston for college, you of H is in Texas though. If I am an out-of-state student I will have to pay about $10,000 more than in-state students would have to pay. I am considering leaving my current high school to live with my cousin in Texas and go to school with her so I can be considered a Texas resident (They consider you a resident after you live in Texas for 12 consecutive months). The school I am at now is okay. It’s in a small town which I do not like, but I have a few friends that I would be a little sad to leave. Also I would be leaving my mother, father, and two sisters. Now think about this for a minute. I would be leaving for senior year, then I would attend college for four years and dental school for two more; next year would be the last year with my family and living in the home I have been in for about seven years, but if I leave next year I have about two months left here. That makes me a little sad, which then makes me question doing this. I really think that the smartest move would be to go to my cousin’s, and go to school with her. I mean it would save me about $20,000 of student loans. So my questions for you: 1.) Any advice? 2.) What would you do if you were in my shoes?