Given that you said to ignore your budget for safety schools, here are some small private colleges with outstanding engineering programs, including electrical engineering and where your son would be a top applicant. All offer merit scholarships of varying amounts.
Worcester Polytechnic (WPI) - automatic scholarship for students with minimum IB of 40. Scholarship amounts are minimum of $20,000.
Stevens Institute of Technology
Rose-Hulman Institute of Technology
Bucknell University
Lafayette College
Union College
You might also consider, both of which offer full tuition scholarships:
Southern Methodist University
University of Delaware