Yes, nice to have it working and can't sniff at those results!
The GPU's probably have a little more to give if so inclined - during heaven benchmarking they only hit 48 degrees or so and no sign of any instability.
I have been playing around with my cooling settings - I have tied the fans to the loop temperature rather than any given component as this makes more sense to me... if the loop is kept at a reasonable temperature then everything else follows.
I have currently got them at low idle up to 25 degrees, ramping to 70% at 35 degrees and 100% at 40 degrees.... does this sound like a sensible approach? I am completely new to water-cooling and while I found plenty to read about I didn't actually come across much as regards fan setup.