Is this impressive for colleges?

sure! you won't really know til you get your real sat or act score as to what scholarships you'll get specifically, and scores are generally what they mostly care about, in addition to grades. but you've taken tons of advanced placement cles and will look great! just make sure your gpa is up to par as well, and do as well on the SAT as you did on the PSAT and you'll probably have a free ride!