OP, I see that you've said there are lots of adoptees in your family, so apologies if this is all blatantly obvious to you, I just wonder at how quickly adoption is being agreed to.
All of the kids who are waiting to be adopted will have experienced some degree of trauma, even in utero for very young babies, and many will have complex needs and require higher support or more intensive therapeutic parenting.
Lots of adopters want very young babies, but you often don't know what substances and trauma the baby was exposed to in the womb and things like developmental delays and certain diagnosises take time to show up.
In my area you would have to be eligible to foster to adopt if you want the youngest children/babies, in those cases social services are still working to return the child to their family of origin, so you have to accept that you might grow close to them and then experience the loss of saying goodbye.
Older kids may have gone through more if they've moved about the foster care system or been in abusive or neglectful environments for longer periods.
I don't want to be negative, but I am a foster carer, so I do have lived experience of some of the children and the systems and it is such a different commitment and different acceptance of risk vs IVF.
In your OP it just seems like a quickly reached for plan B rather than something that's been really well thought out, understandably, as everything is so raw and recent, but it I would pause and process before committing to next steps