....
look at the pictures
My Desktop & Leptop outside
https://i.imgur.com/rNzbOIW.jpg
My Desktop Inside
https://i.imgur.com/hvcnpek.jpg
My Mining Case Outside
https://i.imgur.com/7V6FLcs.jpg
My Mining Case Inside - picture 1
https://i.imgur.com/UpcczqZ.jpg
My Mining Case Inside - picture 2
https://i.imgur.com/GYymQp2.jpg
look at the pictures
My Desktop & Leptop outside
https://i.imgur.com/rNzbOIW.jpg
My Desktop Inside
https://i.imgur.com/hvcnpek.jpg
My Mining Case Outside
https://i.imgur.com/7V6FLcs.jpg
My Mining Case Inside - picture 1
https://i.imgur.com/UpcczqZ.jpg
My Mining Case Inside - picture 2
https://i.imgur.com/GYymQp2.jpg
You use too thin fans - they have very (VERY) low air pressure. Buy 25thickness fan (or even 38mm with low RPM LINK)
And the noise in the bedroom would affect on your health in future (just IMO)
but my fans are 1850 rmp with 72.7 CFM much better than your OD1238-12LLB