1. The coelacanth: the species that are still living are a different genus than the fossil ones. (Coelacanths are an order.) So it's as though all we had were fossilized moths, and we assumed they were extinct. Then someone caught a butterfly, and we realized that the order Lepidoptera was still around. That doesn't mean that the fossil moth species are necessarily not extinct, or that the fossils could therefore be younger than we thought.
2. Morris's book: I'm not sure how you get from "expressed misgivings with a framework that threw a century’s worth of geology out the window" to "acknowledged that Whitcomb's and Morris' framework fit with the facts and were a scientifically viable alternative to the current majority view." It seems to me that "threw a century’s worth of geology out the window" and "fit with the facts" have almost the opposite meanings.
3. Space dust: the idea that the moon should have a thick layer of dust came from an early guesstimate based on Earthbound measurements. Later measurements actually taken in space showed that that the expected accumulation should be small. Even Answers in Genesis now acknowledges,
During the 1960s and 1970s many creationists adopted the “moon dust” argument based on early calculations by some secular scientists, but more accurate information is now available.
Coelacanth is a "kind", and I doubt the fossils of yesteryear are substantially different from those of living coelacanths today.
I don't have time to track down the full forward for "The Genesis Flood" for you - have other responsibilities, but it's there.
GToE will be shown for the lie that it is in due time, and there's no rational basis for it to be the "default" position other than the old argumentum ad populum. I never was very popular in school, and am quite content to hold unpopular views as long as they jive with facts and common sense.
Exhausted...