Should I go to Oxford College of Emory or USC if I want to major in Pharmacy?

Pre-pharmacy track at Oxford of Emory is 4 yrs while Un. of SC at Columbia is 2 yrs for undergraduate. Is it worth taking 2 extra yrs in Emory? I'm also looking at deciding to become a Physician's Assistant or a Pharmacologist. I have never really heard about Pharmacology. Which one of these three careers: Pharmacologist, Pharmacist, or Physician's Assistant is the hardest to achieve in your opinion? Would I get a better job if I went to Emory than to USC's 6 yr under and graduate pharmacy program?