Zero-Two is my slightly overkill beast of a machine for gaming (currently 1080p 60hz) and various other tasks (CAD, video editing). I have not done any overclocking, as she would probably eat my electricity bill alive if I gave her any more power. (In all seriousness, I just haven't tried yet. lol)
I do have a couple notes regarding the build:
Asrock Z390 Phantom Gaming-ITX/ac: My first board was DOA. A week after going through the RMA process at Newegg, I got a replacement that runs fine. Symptoms included no-post, constantly restarting itself every 10-40 seconds, and magic smoke coming from the board at some point.
NZXT H200: This case is very well made, and I had no major problems building in it. Do try to use an SFX power supply if you can, both to help with cable management, and to allow for more air to flow to the graphics card from below.
As for thermals and noise, I am very satisfied. I adjusted the fan curves for the case and graphics card fans to be around 35% at idle, which I find is a nice compromise between silence and low temps. The H100i Pro is set to the balanced preset.
My desk setup involves an HDMI switch and USB switch so that I can switch between my devices on both the monitor and speaker system. I use ShareMouse to control Zero-Two with my laptop's keyboard and mouse.