NewEgg has an atrocious pre-order system, and an atrocious order cancellation system, and non-existent pre-order cancellation system. Their entire front end is running on 10 year old technology with zero innovation or improvements to their site or ordering system. If you want to make sure you get a pre-order use Gamestop or something. Anything but NewEgg. They've shafted me on pre-orders before. And I placed a massive pre-order for like 10 games back when they were giving a $15 discount on all pre-orders. However, I have ZERO confidence that they will process such a complex order correctly.
They are good for in stock items that you know you won't be canceling or returning, and not much else.