SpiritWolfy

I'd start from Gamers Nexus yearly case videos. They make great case reviews.

Since it's a USB mic your options are somewhat limited. 
One easy option would be to use ´push-to-talk´. That way you can stop typing as your speaking.
Another option would be to play around with the volume level in Windows. Try lowering the microphone lever and move the microphone a bit closer to you mouth. 
 
The more expensive option would be to make the keyboard quieter. 
That can be done by installing some O-ring so the keys aren't bottoming out. 

The razer keys are still going to be super loud compared to membrane or quieter mx-keys. The best thing would be to move the mic as close to your mouth as possible. But if you are ever talking AND using the keyboard at the same time, it will still most likely pick up the clicking.

You could just play around with mic levels in windows for starters.

I'd just look into a "streaming" keyboard that you use only when streaming or recording. Software can help lower the sounds but I also had a Razer keyboard (still do, on my media server) but I had to change to a quieter keyboard as to not have the clicks get picked up through the microphone.

So spirit, I also have the Ryzen 1700x. The 1700x and 1800x both run 20c lower than what they report. AMD did this so the fans would basically work harder then needed to keep the chip using XFR and boost.
 
I had a similar problem. What I did is used zip ties to hold it flush until my bracket arrived. Rubber bands can also work.

Managed to fix it I just unpluuged all of my storage devices apart from my USB and hard drive and installed it onto my hard drive thrn im gonna set my HDD as my boot device and then install it onto my SSD