Dave, when you say "working condition", what exactly do you mean? It sounds like you plan a full rebuild using a few original parts and, well, I do not think that will not give you what you want. If you want a shootable gun, it is best to start from scratch and build a gun using a new barrel, lock, wood and furniture. That will certainly be more affordable than everything that you will have to do to use the parts from this one to make a shootable new gun. That is a decent old original and deserves a proper restoration by an experienced person that knows what he or she is doing. Cost will be high, probably more than the gun is or will be worth for a while but it will pay for itself as prices increase in the future.
The barrel work needed to make it safe and shootable alone will run at least $200 - $300, even if you only have someone re-cut the rifling and put a new, solid, properly fitting breechplug in it. Depending on condition, a liner for the bore will possibly be needed and they and the work to install them are not cheep. A new barrel with plug will be much less expensive and safer to use.
A new stock is not cheep. Even if you do the work yourself, stable, decent wood of the proper thickness and width goes up all of the time, you can't buy it at Home depot as I know you are aware. I would simply leave it as is and, if you must have one like it to take to the range or out hunting, find a new barrel, lock, band-sawed stock blank and furniture that you feel is sufficiently like it to meet your desires and have at it.
I am going to quote one of your posts from the earlier thread: "With furniture if you refinish the wood and polish the brass you have ruined the piece." That is true in spades with an antique firearm, even one in NRA Antique Poor to Fair condition like this one. It is restore-able if done correctly, especially the stock, it appears to be in pretty good condition and the stock is the heart of the gun describing where and who it came from but the work must be well done. Without the original stock, the gun is less than questionable and has no originality and little value, even as a shooter - it is just a colle3ction of old parts and is at best, questionably safe to shoot. Please don't take offense, I'm just sayin'.......