Less expensive schools or more expensive schools and hope for aid?

185 PSAT last year and estimated 2100 in March for the real thing. My weighted GPA is a 3.9 and my school doesn’t provide unweighted until you meet with your counselor second semester of junior year. I want to major in biochemistry, biology, or neuroscience, but I haven’t decided yet. And after college, I want to go into research.