It took 10 -12 hours, albeit spread over 4-5 days, and now it’s done. Feast your eyes:
I spent the rest of the evening reading a book on all the major works of Michelangelo, from start to finish. Interesting, though he was the master of the male body, Michelangelo had very little understanding of the female form, and most of his women ended up with masculine features and physique in this painting!
I’m no longer that hung over on Italy, having achieved some sort of closure with this puzzle. Can move on with life now!