That's where you and I differ a little in perspective. Public cord is more fluid and used to treat transplant patients today and inventory will always change due to it constantly being used for transplantation and research.
Private storage is the more traditional count the number of clients who store with you each yr model and will likely be in the can for many years; where as public cord due to increasing public demand for matched material will not imo.
Thanks for the clarification that you believe he will need to store all.