Questions on lining a new pistol case

[Jasta2]

[B]My wife bought me a beautiful case at a antique show today. She thought it may be of use for a Luger case. My question is what is the best lining to use? Felt? After I cut out a slightly larger profile for the wood insert, how can the lining be form fitted inside the case and profile? Can one store a Luger in a case for a long period? This case does not have a glass panel in it
Found a compete matching (with matching mag.)1917 Luger at the show. condition about 85%. Asking price at $1,400. Sound fair?
OOPS, what would be the best adhesive to use on the lining, spray? Afraid some types of glue might filter through the lining and might harm the Lugers finish.
Thanks, Bill