My question is with respect to its position on your wrist. Can it be made to fit comfortably in the position as shown in your photograph and will the clasp be in a comfortable position? I would have the watch actually fitted so you can feel it on your wrist.
As for it being too large? I have a smaller wrist and find the 5712 too large for me, it just appeared a little too in your face for my taste, so I backed off for the 3800. Having sold Pateks for a long period, I have seen men much larger than me prefer the size of a 3796 and women who wanted much larger pieces. Just look at some of the sizes Patek is offering for ladies currently. Everything is much larger than 20 years ago.
If you are confident and comfortable with the size, you will have no problems carrying it off. Loving it certainly goes a long way!
Best,
Whit