Tamid, I have two sugestions right off. First, get a copy of our late friend Tony's restoration book. Second, contact Toby Barclay, posts here fequently, for consultation.

This looks to be a worthy project, at least from the photo.

IMO, the trigger guard can be TIG welded and reshaped for a reasonable amount. I've had a couple of broken trigger guards fixed by TIG and am happy with results.

The stock can be rebuilt. Epoxy and strong "rods" (hardwood, carbon fiber) can fix anything. The issue might be if you would be happy with appearance.

DDA