At those temps I think watercooling it would actually work negatively. For example, if you connect your CPU, GPU, NB, and RAM to the watercooling system, all the temperatures in your system would be pulled closer together. It's true that your GPU would cool down a little, but your CPU, NB, and RAM would actually heat up a little since they're all connected to the GPU. With watercooling I predict that all your components would be around 35-40 degrees when idling, and up to 50 when at 100% usage. I don't think it's worth it.