I think, that it is a bit of nonsens to try to correct all problems at the same time.
When I have installed OSX on varios devices, I have been doing this with the following priorities til now:
1. Create proper installer of OSX version.
2. Boot the device with installer without working network, powermanagement, bluetooth, correct gfx, audio etc.
3. Installed system.
4. Network (wired or wifi)
5. Gfx (No NVDA web drivers on MBP 8.2/3)
6. CPU-PM and AGPM.
7. Patching DSDT and SSDT
I have a Dell 3d device from the same generation as yours working for more than two years. I ended up with Yoesmite because of the USB3 problems with the not working Nec chipset.
I have digged through the files and informations of your started thread and mixed up a Clover folder. You can try to use it by renaming your existing folder and copy the new one in place on your stick.
In any case you have to boot by ignoring caches. If you can´t boot, add in Clover bootscreen temporary bootargument "-x" for save mode. If you have no success copy back from Clover/Kexts/Backup/ nullcpupm.kext to ..../others.