Should I take Psychology, Sociology, and Business Studies to become a Clinical Psychologist?
They're fairly weak subjects - something more academic would stand you in greater stead. Psychology with something like English and a science would be a better choice IMHO.
Psychology, Biology and English/Chemistry - English is amazing for psychology as you do psychological context! You NEED biology, I know this as I wanted to become a clinical psychologist and after finding that my school couldn't offer biology in my block, I knew I could not study it:*