System has been up and running for a couple of days. And thank you to everyone for your input, advice and support. I was nervous about implementing the changes (thought I would break something). However, things are looking well. There are a few hiccups, but overall things are working well:
Using latest NvidiaGraphicsFixup.kext and Lilu.kext
SYMBIOS: iMac 17,1
Nvidia 1060 6gb
Nvidia Driver version: 322.214.171.124.25.61 (says Up to date)
CUDA Driver version: 387.178
(I've attached my config.plist and "Other" kexts folder
FCPX seems to be running pretty well. Other videos look great.
The few issues I have are during boot up or wake from sleep, the screen flashes several times (in 5 second intervals ) for about 20-30 seconds before I'm able to enter my login info. And once in a while, my wireless kb and Magic Mouse aren't able to be connected. So I have to use a wired one, and re-pair the BT mouse and kb. Other than that though, things are running very well.
I've seen a few bench mark tests I'd like to try as well. Any recommendations? (I'm not able to find that water test or know what test to use for Google Chrome).