Stud finder joke:I'd replace the impact driver with a drill/driver combo. I'm not sure how good of a drill the impact is.
Maybe I missed it, but is there a stud finder?
Also, the bag is great, but for something that's going to live at someone else's house, I'd have picked one without any outside pockets. Get one that everything can go inside and be zipped up. Less likely of something falling out as the owners of the house keep moving the bag from shelf to shelf as it's always in 'their' way.
Point it at yourself and make fast loud high pitch beeping sounds. Like a metal detector going nuts.

