Smooth cuts on small ceramic tile
I would use a wet saw. The least expensive one at home centers is around $70. That will give you clean cuts. Scoring and snapping has always been stressful for me because some would not break cleanly and I would be worried about running out of tile. I would only put score and break cuts at the edges where they are covered up (floor tiles). When mounted on a wall where the cuts are visible, I would definitely recommend a wet saw.