How strange. I posted a reply to your note, Patricia, and it seems to have got lost in the ether.
I was saying that your story premise sounded very interesting and that I recalled reading 'This Sweet Sickness' by Patricia Highsmith last year. Highsmith is an author omniscient in that novel and yet it's what she doesn't say that makes her writing so special. Although everything is detailed, I was left pondering on the theme of the novel, jealousy, for some time - I still ponder.
The all-seeing author is a great POV (and I am experimenting with that myself at the moment). For my taste, as a reader, I like to be left with work to do, to be disturbed. I don't want too much explained. I have read other author omniscient (shall we invent a new acronym - AO?) works that I couldn't finish as the AO gets in the way, like a road block that you constantly have to get around in order to move on and I'm left wishing that the author would simply shut up!
It sounds like a Highsmith-esque type of plot - very promising. My feeling is - Go for it! And have some fun with it at the same time.