I've been busy. I read all the replies and the articles and links you all provided and then some. I will have to say my opinion on flushing has been changed. I'm still going to carry on with my experiment on my two plants, one will be fade to finished with a flush and the other I will slowly lower the nutes as directed.
As for the rest I'm going with lowering nutes as well, mostly because I want to perfect the technique and like I said I've been convinced by the science mostly.
I did find and steal this article that argues both sides really well, although it ends up with concluding flushing is ok in some situations, it looks at both sides and is very thorough.
https://www.thcfarmer.com/community/threads/flushing-article.22852/
I don't agree with all of his theories but I like the idea that flushing in the end is more of a "quick finish" to speed the break down of chlorophyll and improve taste without a long cure time. It doesn't say those words exactly but that's what I got out of it.
I conclude that if properly finished there's no need for a flush, the plant does it itself, just be patient I guess. 4 weeks to go!
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