Set Date to be Complete ready to pick

We seem to be getting more requests to order an item but delay the delievery so that the customer is available to take the delivery. Customers will often place there order then contact us afterwards. It would be a great feature if we could essentially acknolwedge the order, place it on hold, but add a date on when to release the order to "Complete Ready to Pick". If we know the item will go via Parcelforce 24 hour, we can dispatch it the previous day to meet the customer desired delivery date.