What stereo bar are you using? If you have the AKG bar or something like it, remove one of the mounting screws and turn it upside down. That way, you will have one microphone above the bar and one below it so you can easily do XY, DIN, or any configuration. Vertical spacing between the capsules is never a big deal if it is only a few inches difference.
I would highly recommend going XY if you are that close to the stage; DIN may leave you with a hole in the middle of your soundstage.