Re: About that January 2020 "deadline"....
Useful article, however, you can short circuit much of the work by simply downloading the Microsoft Windows ISO Download Tool and use this to download from MS the "Windows 7 (August 2018) ISO.
Also I note the other tool missing from the article and comments was:
Using the above, effectively only leaves you with having to manually download updates for the non-core Office programmes ie. Visio and Project.