Sores, did u pack the full BoB yellow bag in w/ trailer in that 2nd checked box? And what about additional gear? Did you pack it with your bike or carry it onboard? Some recent posts recommend using these new "bike bags" instead of cardboard boxing up the bike.
Number of flights? My guess would be at least 5-6. USA to UK, Australia, NZ, Africa, So.America. I'm not really sure yet. This trip is a long way off and freakin' huge! The flights add much to the costs. As for European countries, I don't plan on using any trains. Those countries are fairly small and the whole point is to see them by bike. Other places like Siberia and Australia... trains might be used.