Becoming a huge entrepreneur

I am starting a MSc in finance in a top target in the EU and I need to choose the career to aim for when I will graduate. I have previous experience in tech startups and financial consulting. 

In the future I see myself as an important entrepreneur/investor/executive. I don't really know which is best for me, I just wanna be rich and powerful and meet other powerful people and be on the cover of important magazines etc. I know that I sound like an annoying fucker but that's what I want, I am extremely ambitious and I want to reach the real top. I don't really mind sacrificing a few years to work extremely hard and then be at the top.

To go there I am thinking about the best path and I was sure that starting out in IB would be a good idea, I can meet some powerful people that can be useful in my network and also I would make some money that can be useful to start out something, and also it would help me to get some more prestige and being listened more. Now I am thinking that also MBB can be good for that, I can directly interact with top tier executives and maybe the job itself can teach me more useful skills, but I feel like the prestige is lower, and also that it would be impossible to get a job abroad since (at least in Europe) MBB tend to only hire locals, and my country is shit and pays shit.

I am also trying to understand how to move to the US, even for just a couple of years, as it would be extremely helpful for my goals, and I am feeling like an internal transfer is easier in IB than MBB.

So what would you do? I know that I am putting the cart before the horses, but I feel like I won't work well if I feel that the job I am doing is not taking me anywhere.