Jeremy, its your choice, and I also would find someone else to buy from.
If you haven't already sent it off, think for a moment. You probably just want things over with, and I understand that. But sending the gun back to the guy(s) that sold you a used, damaged and repaired gun as new, is that really the best thing?
S&W said they wanted to see it. They sent you a shipping label, I would have sent it to them. I feel you should have, but if its a done deal, so be it.
If I were a shady dealer, I would certainly want that gun back, and before S&W got to look at it! Not only will getting it back keep me out of hot water with S&W, I get the chance to sell it again, to someone else!
I hope you can find the gun you want, in the condition you expect. I am sure eventually, you will. I have some guns (admittedly, rare or uncommon ones) that I have hunted for decades before finding one that met my desire.
Good luck to you, and yours.