I don't mean to butt into your personal life, but, If it were me, I would not do any of the options you listed. Since it was your brother's gun, and he is no longer with you, I would leave it just like it is. I would clean it really well and shoot it on special occasions.
I have done the same thing with a S&W revolver that I inherited from my grandfather. I was at the hospital with him when he was dying. I heard him tell my dad that he wanted me to have the gun. I got it shortly after he died. It is a sweet shooting gun, and I am going to keep it just like my grandpa had it.
That's my $0.02. I hope this helps you with your decision.
jonblack
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