So I have this basic setup, minus the 1060. Getting resolutions >1080p was what I was focusing on and after hours and hours of messing around, I realized I had it plugged in to the wrong port.. .oh well such is life with these sorts of projects..
Working
Graphics
Sound over HDMI
Not working
Bluetooth/Wifi
Audio through MB outputs (HDMI only)
iMessage (not a huge priority, will get to it once I sort out the other issues)
I am connected via LAN, so the wifi isn't a huge issue, but I would like to get bluetooth working, if anyone has any tips beyond what is mentioned here, that would be great. I listen to music on headphones a lot when I am working on my machine, so the audio is the next priority. I know that seems to be a real trouble spot, and I have tried a lot of the stuff suggested in this thread (not all quite yet).
On the whole this has been a really fun project for a second machine, and I have learned so much about the process that I wish I knew at the beginning. These forums have been absolutely instrumental.