Advice will be nice!

I’m currently 18wks and 4 days pregnant, before I thought about having a second child my husband and I decided to become foster parents, so today I get a call from department of children and families (dcf ) that they are currently looking to place a 7 month old baby in a good home and they said that we will be the perfect fit. Of course I agreed and said yes we will take the baby girl. The twist to the story we didn’t realize that the baby girl is husband niece last time we heard about baby girl is that she was being placed somewhere else. So I’m really excited and nervous due to being pregnant and being due to give birth on the exact same day she turns one. I have never had two babies in a household at the same time and I don’t want to fail as a foster parent or as a parent. If anyone may give me advice on how to deal with two babies at the same time I will greatly appreciate it.