You need to make your current major work and graduate next year. Unless you are in an approved 5 year program or can afford to pay full freight to change majors and take what you want there will be no more financial aid after the end of your senior year whether or not you complete the degree.
If you think paying 12k is a stretch, where are you going to get 70K?
Did you do your due diligence as far as your major was concerned; class sequences, which terms the courses were given and whether or not you were going to be able to finish in 2 years or were you just chasing a big name school?