Let's see if the theory matches with practice
LEDs give light in a spot unless you are using a lens to scatter the light. 5.000K doesn't mean much. Plants love full spectrum, unless your LED emits light in a wide spectrum the color temperature does not tell the whole story.
I don't use LEDs myself but AFAIK it is better to use more LEDs of lesser power scattered in your fixture than two lighthouse graded emitters.