You can pay $4000 a month out of current earnings?
Ok…here is my suggestion. Start putting $4000 a month in a dedicated savings account…start this month. Do this for 6 months. See if you really think it will be sustainable for 4 years of college.
After 2 years (about how long you have until college time comes), you will have over $180,000 in a savings at $4000 a month. That’s $45000 a year for college. If you can then continue to dedicate $40,000 annually (that’s a tad less than $4000 a month), you should be able to cover college costs at most places.