Are you a lawyer now? Being American, are you sure you can advise on Polish law?
I don't have to be a lawyer to know that you can bequeath belongings to anything that you want in a Polish will. And if you want to get really nosy, it was an N reg'd aircraft bequeathed to a Delaware LLC.
What about the children? The spouce? Can you ignore them in your will?
I don't know, that's not what was asked. I'd again suggest contacting a lawyer.
Thanks for the useful info though.