I'm in the same boat, I just ordered an HD8 yesterday and was looking forward to rooting it and putting on stock, but sadly that doesn't seem to be an option.
On the bright side installing the google play store APK seems to be easy, so thats fine. After that I'm planning on installing Nova Launcher and putting it to maximum stock settings, which should at least make it look and behave like stock. Lastly, I just need to find a way to get rid of Alexa and have it respond to "ok google" and it should be almost as good as stock.