I am leaning towards the desktop option, which would likely be overkill but would last me ages even at 4k resolution with the games I like to play. I could also run a 20m HDMI cable to my living room TV and have the option to game in there on the big screen if/when I wanted.
Not always as easy to use a 20m HDMI cable for 4K/60 gaming as you would think. Even more so if trying to use HDR too.