Go to Dewey Vicnairs web site and look at the Smith and the Fox C grade he repaired. You can repair the chips and even add a veneer to the side plate areas. When sanded to shape and blended with the stock then stained to match the repair becomes almost invisible.

It comes down to how much you want to fix. Degrease the stock to get all the oil out of the head of the stock. Then you could just acuglass with matching stain it to fill in the gaps and chips. Trim and finish. That would give you a strong shooter but with visible repairs. Great as a rainy day gun or as a backup spare to keep in the truck. If you want better repairs then it just takes more time. Materials are the smallest expense in any stock repair. Labor, time and effort is the greatest.