Your child is a junior and seems to be a good student, but right now doesn’t have test scores. I am quite certain that there are a few SUNY schools that he/she would get into and like.
If you can save $4000 a month starting right now…junior year…then by the time your child goes away to school you will be able to cover the cost of SUNY for 4 years. If you keep adding to this you will have more options.