Welcome to the forum IC

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Lots of things here. Firstly, don't boil (or mash) for only 60 minutes. I'll leave it up to one of the above posters to explain why

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Not much point in no-chilling in a cube IMO if you want to pitch as soon as it is cool. All you get is another vessel to clean. In other words, just leave it cool in the kettle with the lid on. (Use and pull a hop-sock though).
As Contrarian said, using a hop sock theoretically will not change the IBU's as the oils should fairly instantly be released from the hops [EDIT: see
post #8]. Regardless of what you decide, use a hop sock (your BIAB bag) for your hops. Who wants to stew a vegetable longer than necessary?
I double-batch and no-chill half my wort and chill the other. I drain the no-chill into a cube 5 minutes after flame-out and the rest of the wort might take 30 - 40 minutes to chill. Both taste the same to me and when you think about it, why shouldn't they?*** (Also we did some side by sides on flavour and aroma weighted beers here and no one could tell the difference.)
Don't focus on formulas.
One big advantage of the BIABacus is that it publishes the chilling method used and how long it took.
That is what is important and what you will see nowhere else.
A lot of BIABacus stuff we take for granted.
***Have a think on the above but I'll write more if you want later,
PP
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