@PeoniesAreMyFavouriteFlower
I was approved by a voluntary agency.
you have hit on an age old debate about 'easy to place' and 'hard to place' children.
This is my take on it - other views may be available!
Many people assume that the younger a child is at adoption, less exposure to trauma etc etc. Hence the pursuit of the healthy baby and why these children are always 'easy to place' and are probably most often placed within the LA.
Then there are the complicating factors.
The older a child gets the 'harder' they are to place, black, Asian and mixed race children are also harder to place, as are boys and sibling groups. These are the children who will probably find their way to Adoption Link. These will always be children who need to be placed out of county - again harder to place.
None of these factors make a child inherently harder to parent,
So if you take my son. He ticked every hard to place box going, male, age 7, mixed race. He is now 16, earned a decent set of GCSEs, started college yesterday, has lots of friends and is in many ways a fairly average, stinky, stroppy teenager.
He also happens to have ASD, a learning difficulty, sensory and anxiety issues. He can, and has been very challenging. But compared to some adopted children I know, he's a bit of a dreamboat.
And that includes some who fell into the healthy baby category.
All adoption is a risk. The younger the child the less you know. With older children you have more information. You decide what you are prepared to risk.
With my son, I knew exactly what I was getting, doesnt make it easier, but I was prepared and knew what to expect. Nothing that's happened has been particularly surprising.
Most adopted children will have some additional needs, some way more than others, but you can't predict those needs. Its often not until a child starts school or nursery that difficulties become apparent.
That's a very roundabout way of trying to answer your question.
You are absolutely right to consider your existing children.
But its not as straightforward as saying that children placed via a VA is more likely to have additional needs.
Personally, at this stage I would go with an agency that wants to work with you, who you trust and where you feel supported and comfortable, rather than focusing on where the children might be