Well my good friend, I really can't tell you what you should do with your life, you need to figure out what item will bring you closest to your goals. I imagine you are aware that the small proposition is certainly the riskier one, and the US job the safer one... but still, you have to choose yourself between the direction you want to take yourself, and I suggest you doing it without considering the implications for the MBA. I believe that you choose your life for choosing your life!!! And not just for the MBA, even if it can be a fantastic opportunity.
Hope this helps,
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