So I have been doing a bit of research on this and it's looking like SFF and hard line aren't all that common, mostly soft tubing because of access/complexity. This might be something silly for a first time water cooling builder, but will try nevertheless. My first issue is I don't have the case yet. I can't get hold of this case so I'm temporarily using an NZXT H220 which has a lot more space. Th hardware is CPU is a 5900x, GPU is a 3080 and I won't be seriously overclocking. My first stop was going to EK's configurator and checking the specs against a NCase M1 which is only slightly smaller and same sort of configuration to the S620. It quoted the following; Fans - These need to be thin as there isn't much room between the bottom of the case and the GPU 2x EK-Vardar X3M 120ER D-RGB (500-2200rpm) – Black $ 76.52 Radiator - This need to be thin as there isn't much room between the bottom of the case and the GPU 1x EK-CoolStream SE 240 (Slim Dual) $ 87.01 Pump/Res - I needed something small, but at least with some sort of a res. 1x EK-Quantum Kinetic TBE 120 DDC PWM D-RGB - Acetal $ 273.00 CPU 1x EK-Velocity RGB - AMD Nickel + Plexi $ 124.30 Tubing 3x EK-HD Tube 10/12mm 500mm (2 pcs) $ 35.01 Fittings 6x EK-HTC Classic 12mm - Black $ 44.64 Coolant 1x EK-CryoFuel Solid Cloud White (Conc. 250mL) $ 18.06 Power 1x EK-ATX Bridging Plug (24 pin) $ 2.89 Power 1x EK-Cable Y-Splitter 2-Fan PWM (10cm) $ 4.88 Tools 1x EK-HD Tube D.I.Y. Kit 10&12mm $ 24.44 Total: $ 690.75 (from EK's shop including shipping) Over the years of reading, I have come a custom to people using Barrow and Bykski. So I'm wondering whether I should go down the path of looking at these brands to save some money where I can, or not bother? There are obviously some inherent problems like not being able to shop at the one store to combine shipping. At the moment, if I look at other brands, it looks something like this; Fans 2x Noctua NF-A12x15 $ 105.80 Radiator 1x EK-CoolStream SE 240 (Slim Dual) Radiator $ 99.00 Pump/Res 1x Bykski CP-PMD3COV-X-CT60-V2 $ 130.54 CPU 1x EK-Velocity RGB - AMD Nickel + Plexi $ 149.00 If anyone can provide suggestions/assistance/spoon feed me, it would greatly be appreciated. EDIT: Here is an example of case fitment, this is an Ncase M1, I'm basing it off something like this minus the 120 rad and GPU cooling for now.