It is a worthwhile consideration to give you time to get the evaluations done, continue therapy at a better time of day than after public school, and to continue to develop in all areas of skills. If medication is suggested, you can also begin in less pressured and frustrated time for DS. Look for a preschool setting to start right after the holidays or even a well run child care setting with a curriculum. You coukd also consider a half- day program with some tutoring in the prereading skills. If he ends up struggling and unhappy in a coup,e of years, you might end up going private to repeat a year at a much harder time. Public education is paced now and Therevis little time for remediation. If DS needs were just academic, it would be one thing, but you wrote of developmental areas that coukd benefit from a PRE-K setting, which is not offered.