WordPress as online learning platform

Hi,

I’m looking for some tips and input related to creating an online learning platform using WordPress as a basis. From the top of my head I would need the following functionality:
* an e-commerce plugin that allows me to sell digital and physical products AND selling an online course. After purchase of the online course buyers should immediately have access, so I think what is needed is a direct link between the sale and and some sort of membership functionality. What e-commerce platform would you recommend?

* a membership functionality that is connected to the sale and that allows for multiple products to be linked to a member. What would you recommend.

* An e-learning system that can be directly connected to membership and that allows for: video, FAQ, quizzes/tests, grading and progress and (nice to have) possibility to create some sort of certificate on completion of the course.

Looking forward to your input. Thanks a 1000000 in advance.

By the way: I’m NOT looking for the cheapest solution. I need quality and prefer a one time purchase of any plugin with good support instead of a subscription based plugin.

John