Add-on Inventory Limit

I am needing to set an inventory limit to the add-ons themselves. So for example, i am selling event tickets with hotel rooms as the add-ons. However, the hotel rooms will run out way before the tickets will. So i need to be able to set an inventory limit to the add-ons in additional to the default inventory stock limit of the product itself.

Example:

Tickets = 100 Available
Add-On “hotel room queens” = 50 available
Add-On “hotel room kings” = 25 available
Etc.. etc..

Can some one please help with this. Thank you!

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