My preference is they stay together or mom goes to a home that has a guinea pig there for company, and the babies stay together.
You can email me for pictures at email@example.com
Cross posted at guineapigfinder and local ad.
I was just pointing out to DB that if they did get the cage from you it could be expanded later as needed.
Places like Home Depot have Cloroplast as do some art stores. So it could be done on a budget.
As bpatters points out there should be plenty of cloroplast available for free soon.