We've spoken with HashFast already and they have assured us that they have sufficient quantity of the chips available immediately for what we need. We do have a couple chips ready now (that you can see in the picture) that are just waiting for the boards to be built so they can be tested.
While I wish you all the best with your project, I regret you used Hashfast as your partner.
As a Hashfast customer, I can tell you from experience they have only delivered a fraction of the pre-orders they took. There are thousands of units (MPP on the BBJets Batch #1, Upgrade kits for the BBJets, Batch #2 "Sierra"s and MPP on the Sierra's) that still need to ship out and customers have been waiting for months without any updates or info. They changed their TOS on a few occasions to minimize the cost of refunds, and so an and so an.
If they now start bulk shipping you chips, they are actually reselling inventory that should have been gone to their own customers. Do you really want to do business with a company that uses such despicable practices? You'll end of holding the short end of the stick, like many others (the custom hardware forum has a few threads like
https://bitcointalksearch.org/topic/m.5772340) like Icedrill.