College Admissions - PSAT (SAT) 197,PLAN (ACT) 29, GPA: 4.0 (weighted), - What colleges should I be looking at?

You should definitely boost your GPA to get into the most selective schools like Ivy Leagues, but you don't really need to worry about where you can get in. With a higher GPA, you could get in anywhere. You should tell your unweighted GPA because thats what colleges look at