Help! Plz thanks!!!!

<p>Hi I am an international student currently studying in the US. I m in my forth year of high school and I plan to attend college here in the states..
Here are the schools I have in mind.
Rich sch : cornell, uc berkeley, boston college
Target : ucla, university of michigan, Binghamton university
Safety: university of Wisconsin Madison, stony brook and penn state
I have a 4.0 GPA (junior year)..I transferred into the high sch I attend now for my junior yr)
I am currently taking ap physics, ap calculus, ap psychology and ap biology
I am thinking about dropping my ap biology because it is too demanding that I barely have time to study for my other subjects. I am just wondering it is to my best interest to drop the course and retake the SATs in terms of getting admitted to the schs above..?
I got 1850 and 1930 for the first two times I took the tests.
Superscore:1950
Thank you !!</p>

<p>Anyone ? Plz help out…</p>