Preparing for a mission trip
This link will give you scriptures to be reading over as you prepare to go on a mission trip.
Checklist for Those Going
checkin' it once, checkin' it twice
This is from the IMB website but is a good list. Hope this helps! Plan on taking all your clothes & toiletries in a checked bag. You can get 2 or 3 days out of a set of clothes. You'll still have more than most people where you are going.