You can't expect Audio to work if you don't use AppleHDA_ALC255.kext.
Copy that and CodecCommander.kext to /Library/Extensions, repair permission and rebuild cache.
As for Wifi / BT, what device do you have? Intel is not supported.
See here https://osxlatitude.com/index.php?/topic/8696-is-my-wireless-card-compatible-with-os-x/