First, congrats on the purchase. It becomes less frequent that they are found 'in the wild' in that condition.
I'll present a different viewpoint: If you have shot the model 17 in the past, then keep this one unfired; if you do not have extensive range time with the model 17, shoot this one and enjoy the heck out of it.
It's a lot of fun, but if you've been there, done that, I'd keep it LNIB.
I had probably around 50,000 rounds through my first one and sold it for the same price I paid years later--that's something to think about too. Shot the heck out of it, but maintain and don't abuse, you will likely get your money back and then some.