What lovely news.

Make as many freezable meals as possible in advance. You are going to be too knackered to do much cooking from scratch in the first few months while you all get settled. The more clothing you have for the children, the less often you will be doing laundry. If you drive, keep a bag of essentials in the car at all times. 2X change of clothes for each child, nappies, tissues, babywipes, several toys, clean bottle and cup, blankets, age appropriate snacks and juice.

Get some books to read to them. Very little ones love rhythm and rhyme. They may not understand the words but they get the musicality.

Decide on routines now and stick to them. Meal times, bath times, special one to one play times and bed times. Decide on and employ transition songs to help ease the process. They learn to associate the activity with the song, so it becomes less disruption to what they were doing and more expectation to what is to come.

Get some training or a book on infant massage. Works a treat on relaxing stressed out muscles and over stimulated minds in little folk. Make it part of the just before bed at night ritual. Sing and massage. Works great when they are sick too.

Put the younger to bed (naps and night time) a half hour before the older. Spend that half hour specifically with older, even if the little one is fussing. A half hour of fussing will not hurt and should help baby learn to calm self. Learning to calm self is empowering and good for development of self esteem. Also doing this shows the older child s/he is just as important to mamma and daddy as the baby is. Make certain you tell the older child... "this is your time with mamma and daddy." It should help defray future sibling conflict and jockeying for attention.

Congratulations and blessings to you all.