SMU with BBA Scholar would be an excellent choice. He could also try IU Kelley.
Most top NE business programs will be above your budget.
If he wanted to hedge bets for Mays or McCombs he could look at Ohio State Fisher or UGA Terry. South Carolina if he’s interested in international business.
If he doesn’t mind a little more math then maybe Industrial Engineering? Georgia Tech would be a fit for business or IE. S20 is a senior ISyE. Excellent program.