Speakers and placement for 28 sq meter/ 300 sq feet rectangular room only used in the last 7 meters
Edit: please don’t mind the last part of the title.
So I have the following room (two options below):


Given that I want to use the room for cinema and mainly spatial music using the minimum space possible:
- Do I need the most potent sub, speakers and soundbar?
- Do you think the soundbar should face the end of the room, or is it the same for sound quality if it faces the other (open) end?
- Finally, where do you think the rear speakers and sub should be placed?
