@lookagain You can take BIOL SAT II with regular hs Biology. You donot need to retake Math and Chem SAT II again. AP Bio is not necessary. You have all areas covered - Biology, Chemistry, Physics and Math ( AP Cal AB). Popular premed majors are Biology, Chemistry, Biochemistry. You should choose whatever you like as your major. The pre-requisites courses for the most Medical schools at college level are - 1 year Biology with labs, 1 year General Chemistry with labs, 1 year of Organic Chemistry with lab, 1 semester of Biochemistry, 1 or 2 semester of Calculus/Statistics, some sociology and psychology courses. Most BA/BS/MD programs have minimum MCAT score and minimum GPA requirements to meet before you can matriculate to medical school.
Taking a lot of AP courses is not going to help with BA/BS/MD. You already have a plenty (being an AP National Scholar).