Agreed, at this point it will not be possible to not delay the project, unless the quality of the product is sacrificed, which is the last thing any company would want to do. So as for minimizing the delay caused by receiving a high quantity of defects in a shipment form a vendor, the most viable option would be to immediately contact your current vendor, and ask for an expedited replacement shipment. If they are not accommodating with this, then it is time to contact other sellers, and determine which one would minimize the delay and cost. Scenarios like this are not common, but they do happen, and knowing how to deal with them are imperative for success.