Recommend 4x 140mm fans for CR box

Hi everyone,

Trying to decide between two Be Quiet 140mm fans to replace the noisy stock fans in the Airfanta 3Pro.
Has anyone managed to replace their fans? Was it necessary to do any soldering?

Criteria:

1. Quiet motor at lower RPM (800-1000) so I can sleep (with earplugs). This is the main reason I want to replace the stock fans.

2. Decent performance so it can clean a small hotel room in 20 mins (RPM/CFM/Static pressure).

Contenders:

Silent Wings Pro 4 PWM 140mm Fan (BL099):
2400rpm, 165m3h, 3.64mm H2O, 36.8dBA
AUD 45

Pure Wings 3 140mm PWM High Speed Case Fan (BL109):
1800rpm, 122m3h, 2.44mm H20, 30.5dBA
AUD 14.90

Links:
https://www.umart.com.au/product/be-quiet-silent-wings-pro-4-pwm-140mm-fan-bl099-64522
https://www.umart.com.au/product/be-quiet-pure-wings-3-140mm-pwm-high-speed-case-fan-bl109-74427