About SATs.........they are not the be-all and end-all predictor of performance in any subject. They can be a good tool in showing how prepared you are for math or english at an advanced level. With this knowledge, you can be forearmed and realize you will have to work harder in math studies. But they certainly don't predict results, as has already been shown here.
As for your college, you have one of two choices. Enter your first choice within the Arts and Sciences college, find a major to twiddle some time away in, get your GPA up and try a change in major. It's usually easier to change majors vs. entering from the outside......inside track and all. Or you may find something within the A&S colleges that you like......don't amke your mind up so quickly......Arts and Sciences encompasses a LOT, not just math and English.
Option two, go to your second choice, get in the program you want, graduate with what you want, no hassle.
Actually, I'd go spend time on each campus, gettign a feel of the student/faculty interactions. Are the Profs there to help students, or are they tucked away doing research, leaving grad students in charge of most of the teaching? The latter scenario leaves MUCH to be desired, including a good education. Research universities are great, but usually leave the undergrad student out to fend for him/herself in the company of grad students, who are themselves so caught up in completing their own research that the classes they have to teach are a side dish, and the undergrad deserves better than that.
But then again, this is just my slant on things.