well, if you have the money to throw around if the water cooling springs a leak, go for it! but if I had that same setup, I would have it police-taped off when it comes to liquid.
and I understand there is a lot of potential to OC, so why not get a heatsink and fan like I suggested?
OC to your heart's desire. a lot of tests show that there are heatsinks and fans out there that can match water cooling's temperatures. it will be louder, but safer!