Run your target keywords manually in incognito. Note which trigger AI Overviews. For those, expected CTR drops 30-70%. Either pivot to commercial intent, or restructure the page so it earns the AI Overview citation.
Yes, but apply an AI Overview discount of 30-70% on informational queries. Treat them as a guide, not a forecast.
Google Search Console for what you already rank for. For new ideas, the free tier of Semrush or Ubersuggest plus Google's autosuggest and PAA boxes.
One primary, 3-7 secondary that are semantically related. Trying to rank one page for 30 unrelated terms is the listicle trap.
No — chase intent and conversion. A 200-volume term that converts at 5% beats a 10,000-volume informational term cannibalized by AI Overviews.