Populate due date on sc task

Hi All,

We have a requirement to populate due date on sc_task using the delivery time updated on catalog items.

So, we have few catalog items related to finance like accounts Payable where delivery time is 2-3 business days and few generic ones like ask a question where delivery time is 5-6 business days.

Can someone recommend on a best approach to do this? I know we can write a business rule on sc task table to populate this but is it a right approach since the size of sc task, ritm table will grow over time and BR might bring performance issues eventually.

We have flows associated to each of these catalog items. Can we introduce something the create task activity of the flow to populate due date from cat item? if yes, can someone please guide me through?

Thanks for your support.