Thanks everyone for their input, I have been using an app called HWMonitor for a while, on average the video cards idle at around 28 C and CPU idles at 39 C.
The highest ive ever seen them under heavy load was 59 C for the video cards and high 50's C on the CPU.
The video cards and CPU are the only things being liquid cooled in the system, and there are a few high powered fans in a HAF-X Case. So I dont think I have any problems with temps, please correct me if im wrong.
Ive been playing with nvidia control panel, and im still not sure which settings mean what, like when sli disables, vs multi gpu disabled, im still confused as to how I could just disable one card completely.