Help a momma out!

We have 2 amazing foster kiddos that we have had for a little over a year now. They are changing the goal to adoption, but with this we will be possibly getting their 2 siblings as well. And to top it off I'm 35 weeks pregnant. The case is moving fast and they are wanting everyone together ASAP. If we do get picked to have all of them, instead of the other foster parents. We will have 5 kids, 10, 5, 2, 1, and a newborn. Does anyone have any tips for blending families and especially with a newborn??