These are fairly narrow, but to my mind they're not "useless to anyone else"–narrow enough to be closed as Too Localized. I'd say go for it. How to set a scene with a fairly general but specific goal in mind can be useful to many people. The trap to avoid is refusing to accept answers unless they take into account the very particular details of the exact scene that you're trying to set, rather than scenes with similar goals.
Two things you can do when asking a narrow question:
Obviously I'm exaggerating somewhat for effect! But note how the two ways of making a question more general – focusing on the thing you want to do divorced from your setting details, or focusing on a wider question that just so happens to answer your particular problem – makes for a question that is more appealing to a wider number of answerers, and suggests that it will attract solutions that can be applied to a variety of related problems.