We are also older foster/adopt parents. I am 43, dh 46. We have 3 bc ages 25, 24, almost 23. Grandbabies 7 & 8 on the way.
We brought home our first adopted dd Aug 2002, less then a week before I turned 41. Since then, we have adopted 5 more including one we got as a newborn July 2003. Our oldest adopted is 10 1/2 yo now and youngest just turned 18 mos old.
After raising our 3 bc, we find with these 6 we have more patience and tolerance then we ever did with the older 3. Now it is x2. I like being an older "new mom". Yes, our youngest has neices and nephews older then her but it is OK. Our 3 older kids had baby girls the summer 2003 (when we got our youngest) so it was like I was pg at the same time as them. So we have 4 16-19 mo in family and they see each other weekly or daily.
I wouldn't change things if I could. They are all blessings. I am sure ds that is at home with 5 sisters would wish I'd change at least one of them to a boy

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We still do foster care too. Have 3 now but for short term only.
God's Blessings to each and all.