Honestly, on a tank this small? You're gonna have the same amount of maintenance - if not more - in a planted tank.
Planted tank = trimming, fertilizing, monitoring parameters, top-offs.
Reef = water changes and top-offs, primarily. Along with supplemental feeding (depending upon what's living in the tank), occasional cleaning, monitoring parameters.
I'm still thinking of just doing a planted tank better it would be less of a headache.