I posted have previously posted our weekly rhythm. The idea of having a rhythm comes from the works of Rudolf Steiner (a philosophy I loosely follow in my day-to-day life). The purpose of having a rhythm is to develop a sense of regularity to the day-to-day life of your child. Having a rhythm assists the development of confidence because your child 'knows' what's coming next.
I find that life is so much easier when Chook knows what's happening next. It is easier to talk with him about events because you only need to say "We go to the library after morning tea" or "After your bath, we get into our PJs and then it's time for Story Candle". This really helps his understanding that there is a process, that things don't just happen when you want them to happen. It is a good life lesson. The twins will naturally also benefit from having this in place.