An ABET school is going to require 15 elective courses. Some schools have specific requirements for those (English w/writing, econ, history) but those can be taken at the CC. Make sure they are the right level and that they will transfer. He’s also going to need Calc I, II, and III, chem, physics. A 4 year school would have those even if engineering isn’t offered (Towson?) and they can be transferred. At least one year of required core courses can be taken outside an engineering school and transferred in, and maybe two.
For merit aid, things don’t look that promising with an ACT 22. He’s got to get it higher. Does he have accommodations for testing (more time, quiet room)?
Morgan State offers engineering (general, civil, physics) but I don’t know if you live close enough to commute. Florida A&M is another HBCU that shares facilities with Florida State for engineering, and they do have a lot of scholarships available but I don’t know the requirements. Georgia Southern offers engineering and has lower average ACT scores (but I don’t know about engineering).