AP is well worth it, I entered college with credits already with them. There may be a little more work involved with them, but not too much to stress on it.
When did they change the grading scale on the SAT?? I got a 1500 and was top 6 in my class, but that was when it was 2 parts.
Don't worry, Dartmouth is hard to get into but is well worth it. I could not afford to go there even though I wanted to, and they wanted me to come be a walk on for their baseball program. Great campus, and durring fall it looks amazing.