Approving Orders before Fulfilled

I am starting a site that will accept orders, the orders are fulfilled by a warehouse partner that will be maintaining the inventory of my items and my site will be connected to their ShipStation account.

Issue is I want to review and approve each order received before it goes automatically to the Warehouse partner for fulfillment.

Anyway to do this?  

Basically when an order is received it would need me to mark it paid or approved before the information is sent into ship station.  

My problem is without this in between there is zero human intervention and the warehouse just processes everything sent into ship station.  They won't review orders for errors or hold orders until I approve them.

Thanks,

Matt

If I setup the site to be in Test mode when the orders come in would they not get processed and I could manually re-enter them not in test mode.   Clunky and not ideal but would that work?

This would be a low order volume site.  Maybe 1 a week on average. 

Only other thing I can think of is some sort of form to capture the orders instead of having customers using the cart but again requires me to then manually enter each into the checkout so that seems even worse than my Test mode thought.

The warehouse receives 3000 orders a day through ShipStation which is why they cannot single out mine or give any human intervention/rules to my specific orders.