If you harbour high aspirations, do keep it to yourself or amongst your trusted circle. It serves no purpose to declare it here.
I am a global headhunter. Given what I have read from your posts, my humble suggestions are the following:
1. The banking industry is undergoing severe transformation and whilst it "may" give rise to opportunities but as a fresh grad, you are severely disadvantaged (esp if you graduate from local universities). The primary reason is because your prospective employer will receive not only your honours degress in Finance, they will receive CVs from FTs who have double degrees, in finance/accounting plus law. It is very common for them to have double business degrees and coupled with an MBA from universities in Australia, US and UK, you would have to be extremely optimistic that you are selected before them. Local fresh grads need to be careful they do not have "a frog in a well" mentality.
2. If you have a 'senior boy friend' who is experienced in the banking sector, then you should have already learned that in the banking industry, almost every young executive is a AVP (asst vice president). You can only make it if you are MD or SVP, EVP of a reputable bank. The banking world is a mini cartel of sorts and network and business connections are valued for their trust and dependency. Pls think how you are able to strike a chord with the HR dept when you are competing for the same job with more experienced banking professionals.
3. Get a graduate degree. Go for an MBA now during the financial downturn and you will not miss much. If possible, get one from the more reputable universities (which automatically excludes our local uni), like Harvard, LSE or Stanford. It is not just the paper qualifications but you will be rubbing shoulders with your fellow classmates of whom some will have their family or business background to do well in the US banking industry and together you will rise up the corporate ladder.