How to migrate a simple wordpress store to woocommerce rails?

Question

WordPress

Made a simple store . Everything is simple there: there are several goods (courses), say, only 10.
The client selects the course, in the pop-up form (contact form 7) indicates the name and mail, goes to paymaster, pays, receives access to the course by mail.
So, how to transfer what is to woocommerce. Well, that is, I don’t need a full-fledged chain (I chose the product, threw it into the basket, went to the basket, went to checkout, went to the payment gateway, paid for the goods, got access to the mail ). And I don't need shop, cart, checkout pages. But the MyAccount page is needed.
Is it possible to simplify the above chain to the one I need: I chose the product - I issued the product - I went to the payment gateway - I paid - I got access. If yes, please tell me how to do it (share links)?
Why do I need woocommerce: the fact is that I need coupons, attach an affiliate program, see customers in the menu. It's just that all of this was unexpectedly needed after I did what you see (I got paid for the work).
ps it turns out that the pop-up form plays the role of checkout when choosing a course. That is, checkout is needed, just needed not as a separate page, but as a pop-up form on the main page.