Currency

I'm not sure what currency or basket I should benchmark my performance in or hedge my expected expenses. Frankly, I have now idea where I'm going to be in a few years time. I might:

• Do an MBA in Singapore (Insead - EUR and SGD).
  
• Do an MBA in Australia (University of New South Wales - AUD)
• Look for a job in the US (USD)
• Continue working in Japan (JPY)

So a split perhaps? 12.5% EUR, 12.5% SGD, 25% AUD, 25% USD, 25% JPY? The thing is those don't even look like currencies any more; they look more like bets. EUR on the PIIGS, USD on Ben, JPY on the bureaucracy, AUD on resources. I'm currently about 50/50 USD and AUD (including having sold next year's expected YEN savings) but extremely uncomfortable with the situation.