Thanks for this, I am learning a lot from your approach.lol - let's start with a few small steps.
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I will not be able to attempt any of the memory tweaking until the weekend now.
I have also been tinkering replicating the all core overclock with per core overclock and fixed voltages. I managed to get the favorite cores up to x49 and (i think) a 1.27 ish voltage, 0.02 (ish) up from the x48. Passed a CB and Google 30 minute run too.
I have also been trying to get the system to boot with lower DRAM voltages, it won't have it. Anything less than 1.42 yields BD qcode.
Those 10k fans are keeping the VRM's and RAM temps under control, just.