Today I finished all of my tubing and put distilled water in the system. I had some leaks on the pump, because the O-ring wasn't in there right. Took a while to get it placed right :D. Anyways the system is up and running right now and looks great. I mean tubing & bends aren't perfect but since I don't have any tubes left, I'll leave it like this for now.
GPU temps are good, only 50°C under load. CPU temps ain't too good but most likely it's a BIOS thing, so I hope to see some updates from Asus soon.
All I have to do next is to put in the rest of the cables,throw in my old SSD + HDD's and change the coolant. So it's most likely done