From the outback to The Street

I'm not sure if this is the correct place to make this post, so I apologise in advance if I am mistaken in creating this thread here.

My question concerns myself as an Australian who is a first-year undergraduate. I have lived in Australia my entire life, as have my family. I have no connections in banking at all and I have no family members who work in any other related industry. I am studying at more-or-less the best university in this country (it is hard to tell, especially with Commerce degrees: depending on who you speak to, there are 2, potentially 3, that are equal first), am doing a Bachelor of Commerce and I will be majoring in Accounting and Finance.

It is with this situation in mind that I'd like to ask my question. At the moment I believe that I have done about as best as I could have considering what was available to me. However, my goal is to make it to Wall Street, which I know is difficult even for those who are better placed to achieve this. While getting to where I am now required some clearly defined objectives (only graduating high school with a certain grade), I have no knowledge to go on for making it to a top-tier firm. So, generally and specifically, I'm asking what I should do (considering I have two-and-a-half years remaining at university) to achieve this goal.

The only idea I have had would be to try and get employed in Australia by a local branch of a firm that is top-tier in America (JPM, GS, MS and others all have small setups here), work locally for a few years and try to transfer within the firm, if that is at all possible.

Any advice would be tremendously helpful and it would be greatly appreciated.

Regards.