Well I live on a mountain (as you may know) and for me the cold is no problem, since winter is coming and I keep the windows open (and the computers are near windows) It'll be around 0c-10c normally. For the water cooling what type of liquid won't freeze if it isn't moving. Meaning when I power down and leave it for the night will the cooling liquid freeze? I mean I'm half tempted to use vodka and dispose of it the old fashion way when replacing it (that and vodka doesn't freeze...I'll let you be the judge the real reason I want it). So aside from that what tubing and case go best for it?