May I make a comment on noise reduction?
The main cause of the noise is not the fans. The noise is caused by air swirling around the many corners, edges and cables inside the printer. The vortices make the components vibrate (resonances) and that is what you then perceive as noise.
It is not without reason that the highly complex air currents are simulated on cars, houses, etc. and tested on the model in the wind tunnel.
Sure, you can make the printer much quieter, but not realy by changing the fans.
First you need to know where most of the heat is lost and then which components are particularly sensitive to heat.
It is always better to remove the heat directly from the source before it can spread. Water cooling directly on the LED matrix is ideal for this.
You also have a large amount of radiant heat from the LED matrix. This hits the LCD display and heats it, which is detrimental to the service life. In principle, the heat can only be removed here by the air with a fan. If the flow channel has hardly any corners and edges, then there is hardly any noise. However, this requires a major renovation.
I advise against it, hearing protection is cheaper and more effective.