[Nabeshin]

That's a solid plan
Also, SE 101: DO NOT USE YOUR ITEMS UNTIL YOU'RE REFUNDED, is it so hard to wait a couple days?
You claimed PEB with the heaviest item, not the best option indeed, you can try saying only the watch was missing while the box and chargers were there, to justify the weight, if that doesn't work then do as the post above suggests, call it quits and return everything