Changing The Idea! DIY store?

After a little holiday I came back with a fresh out look on our idea. Instead of having our main actress in an actual kitchen with her husband there, we could show her preparing for it. My first reaction to this thought was having our female at a large DIY shop. Here she would be walking through the isles, dressed like a respectable housewife. She will walk around the isles and pick up all different murder weapons and things that she need to pull off her husbands number. 
We will still have our script, as it will help the audience understand the the story, this will be non-diegetic sound because it will be her thoughts out loud.

What kind of DIY store I have in mind:

A Walmart type of place, big isles