amanico[JLC Moderator]
403161
The only thing is that you will have two watches with very close movements. When it comes to brands such as Patek, I would go for a watch with a much different movement than your 5960.
Other than that, and if it is not that important for you, GO!
And, why not, consider a third one, the Nautilus Chrono, too!
This way, you will have all the variations on the same movement. Why not!
Best,
Nicolas