Gorgeous piece---I considered ALS as well, along with PP. In the end I just preferred the proportions and the slightly-more-visible movement of the VC. (ALS are next-level when it comes to finishing, but there's a lot of plate. I freely admit that this is a very stupid thing to fixate on when making such a decision.)
As for the back-turn, I don't recall seeing anything about that in the VC manual (which is tucked away now), but I've absolutely encountered that exact same advice on VC-related forum posts specifically re: the 4400 movement.
It takes an insane number of turns to fully charge the 4400. Like enough that you become convinced something is broken, but you keep going and then finally after several minutes you hit the hard stop.