https://www.buildcores.com/builds/4KGheom-R?share=true

Hey guys, I‘m thinking of 4 extra 140mm fans for the LANCOOL 216. 2 exhaust fan on top and 2 intake fan at the bottom (I see that lots of people add tons of fans to their cases). I will be choosing a PS 120 SE as the cpu cooler.

However, I'm not very sure if they are effective, especially that the PSU at the bottom blocks air in intake and gives very little performance boost.

Also these new airways might mess up the airflow in the case making it not in positive pressure.

What do you guys think I should do? Keep all the 4 fans, keep only some, or do not use additional case fans at all and stick to the built-in fans?