Hello Helvede,
You can enter the filter "max. graphics card length" for the enclosures. You have to make sure that the graphics card fits in with its 325 mm. For the mainboards, you can also filter for the NVIDIA (Tri- / Quad-) SLI option. Also make sure that there are enough PCI-E 3.0 x16 slots.
Greets
The only full-cover GPU cooler for this product that I know of is from Alphacool - NexXxoS GPX - Nvidia Geforce GTX 1080Ti M18 (manufacturer number: 4250197114622). Apparently not available at Digitec.
Otherwise, there is of course the following universal GPU cooling: EKWB EK-VGA Supremacy
example: i want to build a new computer, but i'll wait until GPU prices come back down because i'd rather not pay a 40% premium over MSRP for a video card.