emeraldvlly,
"Low D1" - That is a valuable piece of information if it is coming from a knowledgable baseball source. You now know where to "fish".
The conference rankings (URL in above post) can be helpful in evaluating baseball levels. My son and I reviewed these rankings last year as well to see where the schools/conferences that were interested in my son lined up in terms of baseball only. We had a seperate ranking for academics. My son will be playing D1 baseball (lower conference ranking 17-32) and studying engineering as your son wants to do. It all depends on the school, conference, schedule in terms of balancing sports and academics. We played particular attention to that before making our decision.
I understand it can be a difficult to evaluate all this infromation and make a decision. There are many fantastic D3s out there, as well as strong lower D1's that can provide an excellent student/athlete experience. It just depends on your priorities and passions.
Feel free to PM me if you have specific questions. Thanks.