If the band actually does play Let It Rock,Shot Through the Heart and In and Out Of Love then it'll be a miracle if Jon gets through those songs in one piece unless he may resort to using a polished backing track. The thing with his current voice is he just doesn't have the right pitch/tone or even breathe control to pull off these songs.

Shot through the Heart and Let It Rock worked during the Circle Tour because Jon still had a pretty good tone and range but with Jon's current vocal condition it's a given that he will definitely butcher the rarities like so the usual songs.