Finally got my extra 120mm rad in, and a good oportunity for a rebuild.
Decided on a few improvements to what is basically my first w/c rig.
Installed a coolant temperature sensor, flushed and swapped coolant (the cheap anti-freeze I was using was nasty stuff and started to clog up my CPU block)
Now I got some Fezer pink and some UV anti kink stuff which has kinda pimped it up a bit, but not nearly like the meticulous work of some of these people!
Decided to remove the cumbersome M2F heatsink assembly to get lower nb temps, and it seems to have worked well, although this is at hte cost of slightly higher nb temps. I'm thinking of getting another fan for the other side of the internal radiator which might help the air get past it a bit better. All in all the layout seems to work well. The only niggle is intaking air via the smaller rad which might bump up temps a touch.