Hope you have solved already.I can't get this to work in 10.12.2.
Graphics driver isn't compatible. I have tried a newer one from Nvidia but it keeps reverting back to the OS X default driver.
2nd issue is no HDMI sound. I have installed Soundflower but HDMI audio isn't listed as an option.
Not sure what to try next. Everything else seems to be working except for the known issue with WiFi.
I got most of the things to work in my alienware alpha, only thing missing is bluetooth.I didn't patch the kernel, you may try the clover plist file I uploaded.