Meshlicious has arrived. Whatever DPD did during the weekend .. maybe play chess? With DHL or UPS, the case would have been long around. And DPD has the tendency to prefer to drop notes into your letter box instead of actually doing their job. Well, whatever.
Case is here, reality has hit home. I guess my mockups with a 280 mm radiator were a bit too optimistic. Calling this a "snug" fit is waay too nice. 140 mm + 100 mm = 240 mm. Not gonna happen.
Other options include:
a) 240 mm open AIO - Alphacool Aurora Pro 240, with the option to redecorate at some point
b) Full custom loop with a 200 mm or 180 mm radiator, eg. an Alphacool NexXxoS XT45 Full Copper, 238 x 199 x 48 mm; from calculation, this should be enough to even beat out a regular 280 mm radiator. So, 360 - 240 = 120. Put the PSU on top, add some spacer / radiator bracket / holder, and off we go.
Addendum:
c) Case mod: Partially outbound PSU - this would still allow for a 280 mm radiator. So, adding about 1 - 2 cm support to the upper vertical GPU bracket, and file down or bend inward of the existing opening enough to make the PSU fit snuggly through (its slighty below 6 cm). The radiator of the Aurora Pro 280 is essentially the Alphacool NexXxoS ST30, but pre-filled.
cu, w0lf.