This was more of an adventure than I bargained for. In case anyone else tries this, in order to get the USB Windows 8 setup to run, I could not just double-click on the "setup" icon on the USB stick. Instead, I had to restart the device holding the volume down button.
This loaded Windows 8. I think that I had to enter my key that I found using the command line. Then the issue was my wifi card would not work because no drivers. So I had to find the Surface 8 drivers on the MS website on another PC, save them to a USB stick and then load them onto the Surface 3. This was harder than it sounds.
Finally, I had trouble certifying the Windows 8 via the internet. Also, I could not install any updates. I thought these were related, but after I plugged into a power source that appears to have fixed the updates problem. (It did not prompt me that it needed to be plugged in.)
Once it installs these updates I will see if it has certified this copy of Windows. I am going to be very upset if I can't figure this out after spending all this time.
If this works, it will have been worth it. I was liking the feel of Windows 8.1. I am not into Windows 10 at all. Don't like it. Don't like trying to change settings, don't like the vertical Metro screen setup, don't like the sharing of my data ala Google, Inc.... etc.