Why the hell are you moving to the US?

Are you looking for capital? You can get that in Europe. Are you looking for a larger market? You should be looking in Europe.

By moving to the US your going to create an amazingly complex tax and business situation that will just make things harder for you not easier. Hell most US companies want to MOVE some or part of their operations TO Europe for tax reasons.

After you capture DE, FR, the whole of the UK, AUS, and ZA then think about the US and think about going to Canada first.