AZ,
First of all, where are you living in AZ. I'm in East Mesa.
I understand the romance of an old original gun. I also understand why you'd want to restore and shoot it..... Yeah, Ol' Betsy belonged to my GGGG grand dad, who was a market hunter in Penn. 250 yrs ago, and I'm still using his rifle, etc,.
As far as restoration... with in certain parameters... just turned a valuable collectable into junk parts. Be careful who you allow to work on this thing.
As far as shooting, bad idea. One one hand, for the same reason listed above. One the second hand, well, you may only have one hand. Rust, hidden corrosion , etc, etc. Just not worth the romance.
I sincerely hope you can come to a final compromise that keeps the old girls value around for another 250 years, and keeps all your fingers on your hands.