Limiting member purchase quantity

[Northeast Mountain Sports]

I'd like to sell items to members of a private club, but initially limit the sales to two of each item per member. I am concerned with limited availability and some items are expected to sell out quickly. After a number of months I'd like to be able to remove the limits. Can I accomplish this is the IPS Commerce app? I see an option to allow each member to buy only one of each item, but how to limit to any other number.

I saw the Group with Parent option, which I suppose would allow me to sell two of an item if I treat the second item as an association. However, I don't see how this would accurately keep track of the stock given the two different items required.

If this is not possible, does anyone have a suggestion for an alternative platform?