Should I change from fluorescent to LED lighting in the kitchen?
14in light is a useless figure. What you're looking for is lumens. ("Replaces a X watt incandescent" is also useful, though affected by marketing a bit.) Get a target lumen value, then get a lighting setup that meets this value. LEDs vs fluorescents doesn't matter for getting enough light, just for power-saving purposes.

Before you replaced the lights, was it bright enough? If so, calculate how much lighting there was back then, and try to hit that same amount.