You have ton of space with that case and it is just a matter of planning. I was thinking of getting that case too. Here is my current build on a Inwin 303 with Hardware labs radiators. In fact you can install 2 60mm + another 360 GTS X flow back side of radiators if you plan just to use a single gpu.
Always remember loop order does not matter as long as you have a steady supply of water from reservoir to pump. Run the shortest path of tubing into blocks and radiators traveling inside the loop.
I would install the 60mm radiator at the bottom in push fans.
Use the uni mount pump reservoir bracket above SR2.
Install the 30mm radiator on top in push fans or Dual fans in push pull.
Loop order is Pump to GPU > CPU> Top radiator> SR2 > back to reservoir.
Mount the drain valve with soft black tubing at the front back side of SR2. I think you still have enough space to use a 90 degree rotary fitting.
Last edited by lovan6; 03-22-2019 at 03:26 AM.