don't quote me on this but i believe you could fit a 120mm aio in with a gigabyte 1080 mini, its dimensions are listed as less than my vega nano and i managed to fit that.Yeah, I'm confident my LP53 and Noctua fan will be able to hold the line (For now...) and I will be disabling Multicore Enhancement if applicable on my board, as it technically runs outside of Intel's stock settings, and I will try to dial in the highest and most stable undervolt possible.
I'm using an Asrock Z390 Phantom ITX. Seems like a high quality board. I've got everything I need now aside from my pre ordered 9900K, and a discreet GPU. Options for that are still up in the air, but I think I'm going to skip Turing and wait for a shrink (3080 Ti?) and go with a nice GTX 1080 Ti instead.