I'm pleased you are happy with how your beer has turned out. That is the prime purpose of brewing your own after all.
But I'm slightly worried that you had to ignore advice you received in this post. I'm equally worried that you choose to ignore the title of the thread! Just as a reminder, it's "Cask ale in a corny?". I think your own statement "Here’s my bitter at about
5PSI"
, sort of excludes you from making any serious contribution to the thread.
I do mention regulators in this thread that will output up 4PSI, and I do pressure some of my beers at 5-7PSI. But I do not try to suggest they emulate "cask ale". Because they don't. Have a little respect for those trying to protect our heritage of "cask conditioned" beers.