Re: Career/study advice..
Accountancy can lead to some very interesting lines of work.
I know a guy who was very talented and worked for PWC in London, he is now working for the UN and doing lots of 3rd World development stuff.
I always think of accountancy as being a more "applied" science and economics more theoretical.
I would also say this. If you are looking to have an exceptional career, follow a path that you are truly passionate about, and that you have talent in. I don't know what your personal motivation is like, but you are more likely to get where you want to go if you are happy on the journey.
Good Luck with getting into finance in the current climate.