As an owner of this watch I can assure you that it fits neatly on a 17,5 cm wrist. People often exaggerate its size. It has presence but is not huge by any means.
Actually the gold version of this watch is one of the most comfortable watches I wore. Can’t say anything about platinum. It shall weigh more, so it may possibly be less comfortable, but that’s just a thought.
Please bear in mind the watch will not fit you on its original strap. It is too stiff and it won’t bend. So the watch would look like something alien on your wrist. It may not look good on bigger wrists too.
I suggest you buy a very soft leather or textile strap (with quick removal pins) so that the strap hugs your wrist. In that case the watch might be fine for you. And you will be able to try the watch and have your own opinion.
Dimensions of lugs are 20/16.
Hope it helps!)
And thank you for a photo showing 3 PP close to each other. Very informative!