Leave the SAS book in. It's a very useful source of information on all sorts of subjects. It might have a bit of a mil-spec tone to it but it was written during the cold war. I don't see a head torch? If you do not have one, consider adding one. A cheap one will do. 2xAA battery type preferably. I have lost count of the number of times that I have needed three hands to do a job. Two for the job and one for the torch.