I've been planning on building a PC for a few years now as my previous computer was an Alienware laptop with a GTX 860M, an i7-4710MQ, and 8GB of DDR3 @800Mhz... Overall it was just inefficient to game on and even worse when it came to video editing, not to mention that it runs slow as all hell with no SSD. I've held off on getting a new PC for a while since my plan was to build this PC as a project for the Senior Tech Fair at my school.
I've tried to do YouTube for a few years now on my current rig, but couldn't upload consistently as my computer can't keep a constant frame rate when recording, runs slow during post production, and take hours (3-4) to render a 25-30 minute 1080p video... So I said "screw this" and got 32 gigs of DDR4, an RTX 2070, and a Threadripper 2920x. I purchased all of my parts through Newegg, B&H, and at MicroCenter. I also did some custom mods for this build like making a custom acrylic PSU shroud and building an LCD display into the front panel.
I will likely switch out the AIO cooler at some point and do a custom water loop with my CPU, GPU, and motherboard VRM. Maybe SLI as well, but likely not till next gen or later.
The build video is on my YouTube channel at https://www.youtube.com/watch?v=15NwjV-j2d8