The 351 is a nice piece with some nice 'vintage' touches i.e. tobacco dial and gold hands, the 50's case . I think it has Panerai in-house 3day auto movement too.
I think the resale issues, if there are any, will be exactly the same as you would find on your JLC; in the fact that the watches you have chosen are favoured as a brand but the particular pieces not seen as stone cold classics.
Did you get your scratch whilst doing Navy Seals training?