There really are great number of tools and automatization processes you can do in order to get content you described.
I would recommend combination of tools to maximize content potential:
-For AI generating I would go with Article Forge (run through guides too)
-Rewriting the texts I would go to either Word AI, Jasper or similar.
-For cutting down texts and similar you can also use Jasper (Javris AI) or some php/word/VB script. Something plain simple.
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