A2 help with Subject choices PLS

Hey Im currently doing AS LEVELS in
Maths, Economics, Business Studies and Eng Language...

I will be doing all 4 as a part of A2... im looking to apply to NUS and looks that ive chosen one from FACILATING SUBS....
Will taking these subjects get me a seat in the top Universities like NUS, UCL, Oxford or Cambridge?

Im also doing SAT and will look to choose from economics or business related courses in uni