Text on the main page of the store. Which of the 4 options to choose?

Question

Search Engine Optimization

I have an online store, 80% of the traffic goes to the main page, I want to strengthen this page with good text.
There is an article for 3000 words, good thematic, competent and to the point, the keys are exposed, linking, all that ...
1. In principle, I could add the whole thing to the main page, after the useful material, but does it make sense?
2. It may be better to allocate a separate page for the article. But does it somehow affect the position of the main one in the search?
3. Maybe it's better to get by with a shorter text? How many words to target?
4. Your option

Answer 1

Depends on what queries you promote on the main page. IMHO, placing an article on the main page of the store is not the best option (especially if the article is after your useful text, etc.).
As an option: if the information from the article is very important for those who are already visiting the main page, you can make a block with a call to action, such as "click to read an article that is very important to you."