If you're looking for a short and spunky name, I think
Lauren is better than
Elise.
Elise seems more formal and old-fashioned to me, and I think
Lauren sounds better with your ln. I have met *plenty* of
Laurens, and I constantly get called
Lauren because my name is so similar (I'm still not sure if one of the teachers I've had all year knows that my name is *not*
Lauren). What about
Lauren Elise?