I'm STILL at it over 12 hours later.
However it WILL install, it only has 3 Gb left. So far only the autotune suggestion for the command line tweak has been helpful. Disabling IPV6, running it through the X Box launcher, nothing seemed to work until I launched the command line prompt as admin and THIS time it said ok. All other times it would just return to the DOS prompt, making me wonder if it had taken. This time it did.