WooCommerce Bookings

For me adding quantities to resource-product associations is very necessary.
I try to rent party-equipment in sets which intersect each other.
A similar idea already exists:

For Example:
Simple Speaker Set: 1xSpeaker
Double Speaker Set: 2xSpeaker + 2xCable + Mixer

It is very important to use the same speaker resource for an efficient booking.

Here is my visualization: https://cldup.com/p5aK1aA7s3.png

A similar idea already exists here: https://woocommerce.com/forums/133476-woocommerce/suggestions/11522154-quantity-in-accomodation-bookings