Creality CR-10 base plate fan mod

I was annoyed by the fans of my printer, so I started replacing them. I found the concept of the fans in the control-box not good, and I wanted to use a bigger PC fan. So I removed all fans of the control box. I removed the base plate/bottom of the power supply, so that the fan I mount from the bottom can blow directly into the power supply and the other areas at the same time.
After that I used tape to close the first half of the slots at the side of the control box (see pictures).
The conc