Hi, thanks for asking this question as i too have found this info useful...
one thing i bought which is going to be very handy is a close and secure sleeper, a portable bed that u can take on the plane and use at the airports during stopovers etc... these cost around $50 from toys r us and are great...

Also my midwife has said the absolute best way to settle baby is to feed during take off and landing... this will stop issues with the ears popping...

we are taking our 3 month old and are not even taking a pram as we are using a sling also which is much lighter to pack and easier to move around with!

Good luck, it would be great to hear how u went when u come back?