Nah. If you set it before Man of Steel, it won't work because Man of Steel will be man's first encounter with alien life forms thus everything with Parallax couldn't have happened (which wasn't kept top secret; he attacked Coast City and tons of civilians saw him, as well as his battle with Hal). If you set it after Man of Steel, it still doesn't work because both Hal and Amanda Waller said Abin Sur was their first encounter with alien life forms. That wouldn't make sense if Man of Steel took place before the movie and Superman has been active for a while. So either way, I don't see how it can work.