Nightly rate discounts for Upsells

Allow for discounts for multi-night upsells.

Currently, upsells allows the ability to match the reservation number of nights buy selecting “per night pricing” while configuring an upsell. This is perfect for my pontoon rental upsell where we require guests to book the same number of nights for the pontoon as their accomodation reservation. Ex: 4 night accomodation → guest must book our pontoon rental for 4 nights.

To support this style of operations, I wwant to heavily discount a 4 night pontoon rental versus a single night pontoon rental but have no way of doing so unless i create a second upsell product with a different per night price.

Example photos attached of how I currently have it setup.
Upsell list:

I currently show all of these products to the guest and request that they select the product that matches the number of nights in their accommodation. Allowing for a discount on the per night price based on number of nights would solve this.