you need to have ram on slots 1 and 3, slots 1 and 2 dont allow you to use both.
well a custom hardline loop is harder to install then a aio. and not everyone are gonna use that feature.
Your welcome and ok.
hey i saw some of your part lists and this is basically like the first one (2600 rx 590 but its a bit cheaper) idk if you like sffpc but you can always change the case. https://pcpartpicker.com/list/X2nwGG