The Phanteks Eclipes line of cases I've seen are not as well built as their other cases, but I haven't seen on in about a year so maybe they are better now. I know the new Eclipes have better fans then original ones had. I suggest putting all fans as intake in front, remove all PCIe back slot covers to increase rear vent area around GPU and thus improve front to back airflow and airflow around GPU.
NH-U12S chromax.black is not as good for it's size but there are many others costing less than it's 69,90€
. What cooler to suggest depends on motherboard and ram. Case has 190mm CPU clearance.
Thermalright TRUE Spirit 140 Power is as good cooling and as quiet as any cooler I know of and is 55.80€
on amazon.de Maybe not quite as pretty as Noctua chromax.black, but less money and better cooling too.
ASUS ROG Crosshair VIII Hero has 85.7mm from CPU toward PCie and 60mm toward RAM so plenty of room for most single tower and for even the widest coolers.
I think Trident Z RGB is 44mm tall so not as tall as some.
Other motherboards have similar clearance so big coolers will fit with no issues.
Everything else looks good, but I'm can't keep up with all the new things out there. I'm interested in hearing how you new build works out.