I have a 7 yr old, a 5 yr old, a 2 yr old, and a 2 month old. The transition has not been more difficult than when I went from 2 to 3. The good thing is that your kids are old enough that they can help out a little with things around the house and even a little babycare if you had another one. My older two boys were very excited about a new baby and have tried to help out in different ways. The two year old is still a little young to understand it all and we have had to deal with some jealousy issues. ( nothing major though) Do your husband and kids like the idea of another sibling? If so and if they re willing to go the extra mile to help out when mommy has a newborn and a toddler to deal with, the transition would most likely be smooth. . The hardest part is trying to balance family activities with age appropriate activities for each child. If everyone is committed to helping out then it can work out.