Personally, I think if you have to use a text in synthesis with 'The Yellow Wallpaper' you should give it an equal weighting because I reckon they want you to do another text because the Yellow Wallpaper is only 40 pages long, so is very short. So, I wouldn't use it to just back up my points but actually give it an equal weighting.
Do you know what your word count limit is for the coursework? Becuase my one was only 3000 and doing 5 points is way too much!
I only did 3 points because you need to explore each point in a lot of depth. i.e. you need context, quotations, critics for each point you make, so I would stick with 3 or 4 points max.
If your question is looking at how society has driven women to hysteria then I don't think your point for paragraph 1 really works- because if you look at how the descent to madness is portrayed then I think you will be overlapping a lot of your other points.
I think paragraph 2, 4 and 5 are very good points, that work well! They are distinct points as long as you don't talk about medicine in your fifth paragraph.
I would do:
One paragraph on how medical treatments results in hysteria.
TBJ- it results in Esther attempting suicide.
TYW- protagonists' descent to madness as her creativity is oppressed and she becomes addicted to the figures behind the wallpaper.
A paragraph on patriarchal pressures like you said.
TYW- infantilastion of the protagionist as well as the dismissal of her opinions
TBJ- Marco & Buddy Willard.
A paragraph on social gender roles, particularly how the female is restricted.
Can I ask what year your in? 12 or 13?
Hope that helps! Let me know if you have any other questions- more than willing to help