Karen,
Have you looked into the Ford TC upfitter: Sortimo in Norcross, GA.
They can be reached at 877-812-6994 or www.sortimo.com
They are a German based van supplier & have alot of products & solutions.
Sortimo is high-end & very pricy, though.
I have their brochure & catalog & did see a similar set-up w/ the bottom box drawers & possible accessories to partition.
Hope this can help,
Joe