re: What type of performance against auburn would change your mind on the QB situation?

Let's see how Finley does when LSU falls behind in a game or needs to put the offense on his back. He won't see a true road environment either this season, that will have to wait until next season.

I don't see any reason you can't utilize both QB's skill sets.
Have a package for Finley. When you need some tough short yardage runs from your QB put Finley in.