New WIX-Shop "Stock" "Time"

Hello together.
I own a small online wine shop and ricght now I want to start a new idea!
For short:
You have the possibility to get wines from a wine maker. But you will get a 10% discount minimum if you order 6 bottles! If you order 12 or 18 the discount will get bigger.
The thing is, that I will take the order from the winery only, when all customers togehter order a minimum of 300 bottles. If I will not come to this number, the deal will not take place and the customer will get a refund. The deal is limited for 14 days!
For this option, it is necessary, that the customer can see the actual “state” of the deal. For example: You will order 12 Bottles! You are able to see, how many bottles need to be sold to make the deal possible. After your order you will see the new “stock”…
I hope I made this coherent…

So I need the Option to show the “Stock/State” of the deal and a limitation of 14 to 21 days.

I hope someone here is able to help me bring up the idea to the WIX-Store

Greets
Axel from Stuttgart

You can find expert developers on the Wix Marketplace an online marketplace with top Corvid web developers from around the world.