Here you go.
So I did some experimenting and I found some patched Framebuffer kexts from a YouTube tutorial, installed them, and now my Gpu is recognized with full VRAM and brightness control but I still don't have QE/CI. That happens on Sierra. If I try the same kexts on El Capitan, I get the same KP as above.
So a friend of mine patched the DSDT for me. He got the graphics injection right but it still hangs on boot with vanilla BDW kexts. I don't know what else to do now. I will definitely try a clean installation on a new hard drive because I want to start from scratch. Also, do you need pictures of all my BIOS settings? The screenshot shows what happens with the patched BDW kexts.