Keep going!
As @violetdragon says, you probably need to start with a bare config.plist to get the system up and running. Don't worry about sound and USB 3.0, don't worry about serial numbers (you can always re-use your previous one etc)
If you have a UniBeast 7.0 stick, boot with it but don't choose the Sierra drive, instead boot to the UniBeast "External" volume. When the install screen comes up, don't go further, go to the Tools menu at the top and run Terminal. Then try copying the UniBeast config.plist over to your main Sierra drive using Terminal commands.
You will get there in the end