Thanks for all that tip. I did consider a usb wifi dongle in the first plans for this but i'd rather use the usb port for something else. I'm more than happy to consider motherboards with m.2 slots provided they are Mini ITX. Because I really really want this case to use it's a matter of personal preference already. But I do get where you're coming from. An AIO is a good thing for this case because the space is limited for airflow. But then again I'm not aiming for super-mega clock speeds if you get my drift, still it would be nice to know that the CPU sits under comfortable temps even under load. I hear there are some low profile heatsinks or air coolers from reputable brands.
I also get your point about not maxing out the 1080p 144Hz point but i have no idea of any 1080p monitor at 75Hz which is my first choice. I only had pcPatPicker as my reference so I don't know where first to look. I'm still compelled to go with either a 1060 or a 480