Don't know where to start with paid products on my website

Hi everyone!
I'm currently working (for too long) on my business website, which is about wellness and singing (using the voice as a tool to reduce stress, have healthy habits, express emotions, etc) and here's my ''plan'' :

- Collecting emails (I give a free 7-day email course)
- Write a new blog post each week, same day, same hour
- Notify my subscribers about it only once a week, same day, same hour

Now, my trouble is that I don't know in which ''packaging'' I should sell my paid product (s).

I've thought of...
- Membership, but it is, for the moment, to complicated for me to be constant in adding new content.

- Selling a course through a LSM plugin (I work with Wordpress). I'm not a beast with Wordpress, and it would take me a LOT of time setting up the right plugin, and making it visually beautiful. I'd love to hire someone for this, but I'm not making any sales for now. I'd also like this to be my ''ultimate'' product.

- Selling personalized training (15 or 20 spots at a time). The only disadvantage I see is that it will took a lot of time, every week, compared to a product I create once and sell many times. I'd like to think that this is a great starting product I should put effort in it, then, I'll hire someone to set up my plugin for an ultimate course.

I want to know where would you start first? Or where HAVE YOU started when you sold your first online product? What is your best success/surprise/deception?

Thanks a lot !