I'm planning a casemod with water cooling, but right now I'm stuck in what type of pump of use? I'm planning on using dual 360 rads, GFX, CPU block, reservoir and a milled midplate. I have 2 x Laing DDC12v 18W and a dual top, but obviously that takes a little more space than a single D5. Would like a few advices. Should I just stick with my two DDCs or should I buy a D5?