Op, do you know your EFC as of now? Would you qualify for HEOP?
in any case your best odds if you want choices is to work summers and save the money, get good grades in a rigorous curriculum (4-8 AP s total or IBD or dual enrollment), prep for the SAT and not take the test cold, hopefully preparing the PSAT over the summer between sophomore and junior year in order to have a shot at national scholarships.