I have the exact same machine and I'm trying to get El Capitan running on it. I'm not very talented on understanding
DSDT and SSDT but I used most of the information along with some of your attached file and have most things working though
sound is not functioning at all.
I don't suppose you have your machine running El Capitan??? If so would you share once again how you got it working along
with your files???
Cheers
Jim