This is a Ultimate Gaming Machine, pure and simple. Picked out the parts and built what would be the absolute best for games and keep me playing and happy for the next 5 years.
One of the biggest challenges with the Corsair gear is their need for USB 2.0 Headers. Thank God for NZXT and their USB 2.0 Header Expansion Kit. Managed to get the Power Supply, AIO Watercooling and Commander Mini all plugged into the expansion kit and it just takes up 1 header, leaving the other free for Front USB 2.0
Another challenge I encountered was the power cable provided for the AX1500i. In the USA where they use 110V, they need a 15A Plug and Cable.. they stupidly did the same thing for the Australian Plug and Cable, even though we use 230V. Jaycar to the rescue in that regard with the 10A to 15A Conversion Pack.
Overclocking, after doing some in-depth reading online eventually became easier. It turns out you need a 125MHz BCLK if you are running anything higher than DDR4-2133 and then apply your CPU multipliers from there. I wasn't aiming for extreme overclocks, but safe ones. I got the CPU to 4.375GHz at 1.2V. The cooling unit generally keeps it at about 35C Idle, ~80C Full.
Overall, this was a fun machine to build. Named it after my favourite ship on ST: VOY and my love for Greek Mythology.