Hey, just a couple of other comments. Assuming you’re applying for econ at Dartmouth and Brown (both of which don’t have business undergrad majors), I would hope some of your work experience or extracurriculars can be tied back to econ/business.
But for Dartmouth and Brown especially, you would want to demonstrate interest in other subjects as well somewhere in your application. Just to show you are into the whole lib arts experience (which I hope you are).
Also, all your reach schools have expansive aid programs, and i know Dartmouth offers full tuition scholarships without loans to families with standard assets whose household income is less than 125k per year.
Also, as to your SAT score, you will be compared against previous and current applicants from your area and school. Is your SAT score near the top of the pack for students in your school/area generally (like, say the top 10% or so)? If yes, submit it. If not, don’t, as it will count against you. All the top colleges will want to see that you can achieve and be at the top relative to your peers specifically. Your rank works in your favor, but make sure your SAT score will too.