Since my last update:
PSU InWin A1's included PSU was the only part left making noise in my PC. I finally had enough when it started making coil noise while gaming so I added Corsair SF 750 Platinum which runs at 0rpm mode up to 300W usage.
CPU Cooler ID-Cooling IS-60 was doing ok with Noctua Fan with CPU idle around 45 degrees, However, I decided to add Corsair H60 so the case can have a better exhaust system with radiator's fan on the back. Didn't use Corsair's fan though, Noctua is extremely silent and reliable. CPU Idles around 30 degrees now which is very impressive for R7 2700x. Arctic Silver Thermal Compound might have helped a bit.
LCD with stats monitoring This is something I've been meaning to do just for fun. 7-inch LCD is connected using HDMI and micro USB connector. Used angled adapters to fit the LCD inside.
RGB A1 does have built-in RGB but that's only at the bottom. Strip inside makes everything brighter inside which looks cool with LCD.
Is it silent? Heck yeah! It's practically inaudible at idle. At max load, you can barely hear it, that too if you pay attention at 2 ft distance. Don't hear anything at all having headphones on (without even any sound - with just passive noise isolation)