@RightDirection
I hope this finds you well,
I have a lot of experience with Georgia Tech and its students and programs, having worked there for some time. Nevertheless, I will tell you that my words are limited in the sense that I did not attend as a student, but I have had many many interactions with students, faculty, and my own colleagues, some of who are GT grads.
Double Majoring at GT, to the best of my knowledge, is not practical, useful, or easy by any means. Allow me to elaborate. At GT, there is no such thing as a double major, and according to the GT ME website (which applies to the whole GT):
(GT) “does not offer double majors but does offer a second undergraduate degree. You must meet all of the requirements for both degrees and earn credit for a total of at least 36 additional hours in excess of the first degree.”
This means that your child will be working towards not one, but two rigorous engineering degrees. It is not feasible that your son will graduate in 4, or even 5 years without taking a relatively heavy summer load. If your son ultimately wants to be an engineer, this means that he will miss out on valuable and extremely important internships. If he wants to go to grad school, this means that he will miss out on important research opportunities (although he can probably balance his classwork with research, it will be difficult).
Now I took a reread at your comment, I realized that you mentioned that your son has 40+ college credits. I still think my information above is useful to someone else, so I won’t delete it. In this case, maybe it will be more practical in theory, but you need to remember, GT has a reputation for being very rigorous. It will be a lot of work, and really it won’t really serve a benefit. Both CE and AE are great majors, but I would recommend maybe majoring in just one with a Minor in the other, or doing something that is more broad like ME or EE. The reason I say this is that both majors are very broad, and can lead to a variety of jobs.
I would like to answer your question more in detail, but I would like to ask you, What does your son see himself doing? With this knowledge, I can try to guide you to what the ideal major/minor would be. Obviously, your son’s plans may change, but I like the fact that you are trying to preplan things out. Many people will tell you that your son doesn’t need to have everything planned (which is true to some extent), or that he can take his time figuring things out (true to some extent, but that time is limited), but these sentiments are not very effective. If one plans their path out, they will be more prepared and ultimatley succeed more, in my humble experience.