If you can pay ~15k per year, then you have options.
With your high SAT/GPA, you’d probably qualify for automatic full tuition scholarship at many schools.
Here are a few examples:
Univ of Alabama
http://scholarships.ua.edu/types/out-of-state.php
Univ of Wyoming
http://www.uwyo.edu/admissions/scholarships/non-residents/rms.html
Univ of Mississippi
http://finaid.olemiss.edu/scholarships/