I finally got some time free to put this build together. Everything was delivered in the package as expected, all wrapped up very well with bubbble wrap, and air pockets.
I have a Corsair 600Q case which is awesome. I have mounted the radiator on the floor pushing air through the radiator in to the case, with an exit fan on the back wall (it's an inverted case, with the PSU at the top)
The whole cooling assembly was very easy to put together.
During the build, I made some dubious choices regarding the order of things, which left me performing nimble finger movements which my large spanner hands are not ideal for.
The CPU block on the cooler had TIM on it, which I scraped off, but I didn't have any cleaner to remove it entirely, so I have a mix of a very thin scraping of whatever that was, along with a very thin scraping of the Thermal Grizzly that came separately. So far my CPU temperature is low enough to suggest it's not a problem, but I haven't started OC'ing it yet, so will find out soon enough.
Stock benchmarks (performance test) suggest that modest improvements have been made: My 2700k which was OC'd scored 4919.8 on the passmark rating. The new 6700k at stock reached 5470.8. Curiously the Memory component of that benchmark actually dropped 21 points from DDR3 to DDR4.
Glad to see it worked first time. I just need to route some cables, and follow the OC'ing process listed above somewhere, and I'm done. Thanks to Overclockers for a great deal, great delivery, and to their staff and the community for this helpful thread.