Ya, you need another Luger or two, IMHO. But I'd hate to have to sell off any of that nice shwag for it.
I have the opposite problem, myself. I have very little in the way of accesories of the correct period. I've got an armband, a medal (reproduction ribbon), some holsters and a couple of original ammo, but nothing like what you have. I doubt I'll get a uniform or flag but a nice hat and some daggers would be sweet.