As for the flood, the natural effect of a meteor hit the magnitude of the K T event strike would (naturally) cool the atmosphere. We know there was this meteor event at some time. You can fault me for my reasons of rejecting the dating of the event...
You are off by about 63 million years. Yes, that is something we can fault you for.
You are cherry picking from billions of years, looking for events that you can attribute to this flood.
But your story doesn't form a consistent whole. You have to ignore too much data, and manipulate too many events in your efforts to support the flood story.
The "minor" problem of a 63 million year difference in dating is one example.
Sorry, it just doesn't fly.
Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.