Well, the order has been accepted which is not a total limbo deal.
Your Z06 is Mil Yellow, which is always somewhat of a constrained option. As with a Mag Red, it's a two step color process... which slows down the production line. They are scheduled to avoid bottlenecks.
You may wait, but you are not stuck in the "deep woods" from what I see.
You're working with Barlow Chevy/Olds, right? If they sell a fair numbers of 'vettes they should have the allocation to get a Yellow one.