I agree with you actually 
but if OP wants to study both AP Bio and AP Chem, the choices are either AP Bio replacing AP Econ junior year, or taking both concurrently senior year, and due to the super heavy workload that would imply, that’d mean removing APs that exist as honors or regular courses. (That’s why I didn’t change AP French, since I assume it’s its own level of French with no “honors/regular” senior level class.)
Not sure the trade off is worth it as, indeed, it’d be brutal.
However the curriculum choices would point more to “future social science/business major” than “future scientist/researcher”. Obviously this depicts plans by a 15-16 year old.
OP: by the way, you can be a researcher in many fields, including those that analyze society.