Having read On Writing I can say that 8 and 9 aren't even real differences.
King is against detailed description of characters -- (paraphrased) "If I describe character too much, it conflicts with your view of them."
He's also against overly detailed description of places -- (paraphrased) "Keep it brief. You want to give a description of the room, it's not a travelogue."
3. and 4. are identical to King's recommendations in "On Writing". King is pretty passionate about that.
5. is the same, I think.
7. is kind of a difference, although King laments that few writers can actually handle it.
8. and 9. are real differences.