I built this back in early December before the GPU prices skyrocketed. I was able to pick up my 1070 Ti for $480 at that point. The only thing I already had was the G502. Coming from a 7+ year old laptop running on an old i7 and GT 630m, this was an immense upgrade. The build itself was nerve-racking, but much quicker and simpler than I expected.
I have only done some light overclocking for now as I am not too familiar with voltages yet. My CPU temps are just estimates from memory as I have not kept as close an eye of them since I very rarely saw it go past 65 degrees. I kept a close eye on my GPU temps since I overclocked and was playing around with custom fan curves. I do wish I went with the s340 elite or H700i, but the p400 is still a fine case. Price without peripherals was around $1350. I picked up the headset, keyboard, speakers, monitor, and Noctua fans over the course of the next month or so after the build completed.
As of now, I mainly play PUBG but I do not ever drop below 94 FPS on max settings. I plan on picking up more games, but right now I'm just having a blast playing my old games without any issues. Next step, custom water loop!
Full disclaimer: I am not very creative. I saw the LED color scheme and wallpaper on reddit.