Thanks SO much for this. My build is almost identical to yours and the build went smoothly.
What did not go smooth:
Newer versions of Clover seem to hose up the EFI boot partition on the Hackintosh...even if I'm conservative in changes. No matter the Clover setting, OS reverts to Mac nVidia drivers (instead of web drivers), and the NIC isn't seen. Copying the EFI partition from the 10.13.4 High Sierra USB installer to the EFI hackintosh boot partition seems to fix those issues.
I have 4x16 sticks of RAM, and the OS only sees 1/2 of it, but BIOS sees all of it. I presume, like you, this is purely cosmetic. I am hesitant to try and change this via Clover as any changes via CLover post install seem to result in the above issues.
Boot time is maybe 30-45 seconds or so, if I do this again I may forgo the APFS and do the HFS+J workaround.
I have not overclocked (yet) thinking about it.
Single Core: 5924
Multicore: 26443
OpenCL (1070): 149018