Wake Forest’s engineering program is small and brand new, but if he likes Lafayette and the engineering-within-a-liberal-arts-college scenario, Wake is incrementally more diverse than Lafayette and of course closer to home, and probably has at least as good a financial aid outlook. https://news.wfu.edu/2018/08/21/wake-forest-engineering-gains-momentum-receives-prestigious-invitation-to-join-keen/ The downside is that they don’t have ABET accreditation yet, because they cannot apply until after the first class of engineering majors graduates in 2021, but the stated plan is to apply at that time and obtain accreditation that will cover the class of 2021 forward.
I also agree that if he likes Lafayette, then Bucknell and Lehigh should also be on radar. Also CWRU, which is strong in fine arts as well. And if MIT is on his radar, consider nearby Tufts, which has a more LAC-like vibe but also excellent engineering as well as fine arts. In addition to Tufts’ own longstanding arts programs, the School of the Museum of Fine Arts became part of Tufts in 2016.
Diversity overnights to consider applying for:
https://admissions.lafayette.edu/obc/
https://www1.lehigh.edu/admissions/undergrad/visit/dap
https://www.bucknell.edu/journeytobucknell
https://go.case.edu/register/diversityovernight
https://admissions.tufts.edu/voices/voices-home/