I was thinking of taking:
5D, 7D 16-35, 24-105, 70-200 2.8 (because of Singapore night zoo) & 1.4 x converter,benro (or is it benbo) tripod (as very light & packs down small) and flash
all in lowepro 400 flipside.
I also have the EFS 17-55 but this will overlap too much but I do love it for the 2.8
any other ideas ?