The cooler ordered originally was a Silverstone Argon SST-AR01, however it wasn't available anymore, so I got an Arctic Freezer A30 for the same price. Some other parts might've been better, but I took what was available in my little European region, so the prices are from a local shop.
The build went pretty well, but I took my time. Sticking the adhesive circle strips to spacers took a while. Removing a 24-pin is nearly impossible. The only issue I really had was that the PSU only had a single SATA power strip, which (without molex-to-sata adapters) was a bit of a pain when you count in a DVD drive.
The fans are set to be on the quieter side with the CPU fan spinning at 590 RPM at idle to get around 36C and ~975 RPM at load for 52C. Ambient was around 25C.