How to manage Credits with Classifieds

Hey guys,

So I've been trying to use Classifieds and set it up with our community but I'm having some issues.

I would like to make use of the credits system with buddypress and woocommerce subscriptions.

The goal would be to...

a) Display a "Submission" tab in the user profile where users have a resume of their credit left, a link to buy more credits and a table with past submissions. The default classifieds tab doesn't really suits us since we have our own front-end submission form.

b) Allocate a certain number of credits on a monthly basis based on the user group (linked with woocommerce subscirptions). Allow users to buy a one-time amount of credits.

My main confusion here is how to create a woocommerce product that gives users a certain amount of credit?

Thank you for your help.

Regards,
Bastien