Really thanks for your time @Shaneee
I have the same panic problem at the same point. You can look at the previous posted photo, it's exactly the same dialog message.
BTW I had to change UUID because it gave me the incompatibility screen after launching installation.
I used something similar to my PC (iMac 18,3) instead of MacPro5,1 as in the config.plist
I used these settings on system information:
ROM 11223300 0000
instead of what you gave me
Maybe there's something wrong in it? I really can't undersand why it will not give up and let me install! Damn machine!