I am planning on water cooling, it is the entire reason for my buying the Steck. I plan on using a
Swiftech MCR220-QP-RES-R2 radiator with built in reservoir, the built in reservoir is entirely the reason for this choice. I will be using a Swiftech Apogee Drive II that I had previously used in my Ncase, cooling is good and noise levels are fine as long as you keep the pump under 50%. The radiator is 299mm x 34mm add 25mm for fans and it should just fit. My plan is to use 2 x Noctua NF-F12 PWM chromax Black for cooling, if being so close to the top plate causes turbulence I have some 120mm x 20mm fans I can use instead.
After watching Jay2Cent do a loop in a Ghost S1 it looks like fittings on the GPU side would possibly be an issue, so I went with Koolance low profile 90 degree adapters. I am just going to use barbs and hose clamps rather than compression fittings to give me the most room.
I figure this loop will be dead easy, the hardest part will be running tubing from the CPU side to the GPU side. Haven't received my case yet but I have my fingers crossed it will all fit.