I always see that same paragraph of St Nectarius quoted on this subject. Can anyone provide some more context?
As to the passage of St John of Kronstadt, he seems rather to be arguing against those who claim to "see the Lord's mind" based on their study of geology and paleontology. That is clearly wrong, but it doesn't invalidate the studies themselves, which are just theories of chronology and descent. Natural science can only provide descriptions and explanations of natural processes; it can't give answers to deeper questions of purpose or meaning in life and the universe.
Bishop Nikolai has not been recognized as a saint by my church, so I'm not sure what authority he has. Interestingly, he also said some pretty liberal things and was something of an ecumenist for a time.
The rest of what you quoted is still just your private interpretation of what these Fathers said. None of the Fathers explicitly mention evolution or Darwin: you're the one who makes the connection explicit. So that's why I prefer to wait for our bishops to consider the topic and make their own pronouncements.