Undergraduate Enquiry

I'm currently in the process of my A-levels in England and will be looking to apply for universities in the next year, due to start in September/October 2015.

St Andrews is my first choice and I want to study Financial Economics but I am predicted to receive 3 A's at A-level.

Even though this would meet the "entry requirements", it would only gain me 360 UCAS points & according to various higher education websites, you have to have a higher point tariff than 360 to get an offer from St. Andrews.

So, my question is: would there be a good chance that I would not be given an offer even if I get 3 A's? I am aware that there is not a yes/no answer as circumstances are different every year, but what I don't want to do is waste an option trying to get into St. Andrews when my A-level results aren't going to be good enough.

Thanks in advance :-)