[Anthony]

The best advice I can muster on choosing a major is to talk to people in the field to get a feel for what they actually do, it may or may not surprise you, but it is better to get any misconceptions out of the way early.
Choose a school(s) that has good programs in both. One of the nice things about most engineering schools is that the first year (sometimes two years) is virtually the same course load, so the time frame to make a decision also expands a little.
Visit those schools. Meet the professors, the students, and see what the campus is like. Make sure it is a place with people you dont mind spending a lot of time with.
Don't burn yourself out early. Grad school is becoming more and more important, especially in the more advanced fields, and it gives great experience actually being involved in projects relating to your area of interest. It also gives great contacts for when you do start trying to find a job.
Good luck with what you may choose