I just spent another 20 minutes re-watching the kickstarter and assembly videos for the Winter One and honestly do not know where I'd possibly mount a pump and any fill/drain spots in it. The photo on the kickstarter just showed a pump hanging out of the side. It can't take a wall-mounted reservoir like I did with my SM570 (linked above) because drilling through the front would show the screws. I thought maybe I could go with something like I did in my SV590 case and use a Glacier R160 pump/res but on a with space for the pump provided by a short RTX 30-series card:
But even that doesn't have any place for it to screw down. The only two options I see left are using an Eisbaer Solo LT and no reservoir. The listed 70mm clearance excludes the Eisbaer Solo with fittings) which probably won't happily run two blocks and two rads. The Apogee Drive II with angled fittings might BARELY fit if angled fittings are used. The Barrowtech 3-in-1 is just too tall.
There is still the option to run a 140mm in the bottom and a 280mm in the top. I am not confident that can handle an OC'd 9700k and OC'd 3090, but it might. It's quite a bit more surface area (both in the fans and in the radiators) than the singe 360 I was rocking in the SV590. It wouldn't be beautiful, but it might work.
I backed it with $10 just for the updates, but I want to build before December so I don't know if I'll preorder on KS. Oh how I wish I was involved in that beta program! I'd have shipped him my own Glacier 160 and said "This is perfect - make it fit!"