In reply to arnold666: Sorry to be a bit of a pedant but Trango Guides are not B1 rated. There are definitely bendy B0. Trango Evo S are B1 rated and pretty stiff, so I'm assuming these are the ones you are talking about.
Also agree that you should wear the boots on the plane so should have to worry about weight. If they are actually Trango Guides, I definitely take the Charmoz as they will be much warmer and crampons will fit properly.
All the best anyway and hope you get some decent weather.
Ryan