Due to cutoff in our area, we won't be able to enroll DS3 into preschool until this fall.

DS is very advanced in some areas (e.g. visual/spatial) and on track in other areas (e.g. can only name a couple of colors).

Lately, I have noticed he either refuses or does a sloppy job on things that are not his level but at his age-appropriate level.

If he is ahead in all areas, it would be a slam dunk. Since he is not, how should I address his asynchronous development in the preschool search?