I finished my build yesterday and got some more stuff to share. The main 'issue' i had is that is that i had to take off the case IO panel quite a few times because:
1. my motherboard has an integrated IO shield and couldn't be put in or taken out with the case panel in place
2. my GPU (Asus RTX 3080 TUF) only has 5mm spare room which wasn't enough to put it into place or taken it out with the panel into place
Once you get to know this limitation though, you quickly realise that you have to think some steps ahead before putting in the MB/GPU or just leave the panel detached until you're 100% ready.
I've got the spine in the 2.5 slot GPU position which is just about enough for my GPU. There's 1-2mm between the fans and the panel, which does cause some turbulence unfortunately. But that tight fit is just so satisfying. I've undervolted my card to .875v and let the temperature get up to 78C before really ramping up the fans. In games, this cools the GPU with the fans around 1200 RPM which doesn't create too much turbulence noise.
On the motherboard side, there is 74mm of CPU cooler clearance in this config. I'm using the Noctua NH-L12S which is perfect to keep my R5 3600 at bay while being very quiet.
My only gripe is that I'm still not convinced by the PSU placement but that's a detail. They could've just made a vertical hole in the back like they did for the horizontal placement of the PSU and then the power cord extension wouldn't be required.
Now I'm only waiting for the angled DP cable so I can place the case with IO on the bottom, that should decrease GPU thermals (and more importantly, turbulence noise) quite a bit.
I'll take some images this weekend.