If you are worried about taking more than 4 years to do an EE course, find out if the college you are going to accepts transfer units. If so, take classes in the summer during the high school years then transfer them to your college. I was lucky to have a majority of my AP tests count towards units; they helped me get out of 5 classes. And then, if you take summer classes during your college years, that will also help to reduce course load over the regular school year. Assuming 3 classes during the summer for fresh, soph, junior years of college, and an assumed 4 classes transferable from before college...
4 + 9 = 13 courses. Here at UCLA, the recommended courseload is 4 classes (16 units) per quarter, and each academic year is 3 quarters. So, this allows one to take 3 classes (12 units) per quarter instead of the recommended 4.
From personal experience and from talking with my classmates, 3 classes is so much easier than 4. And 4 isn't even too hard. Therefore, given all these assumptions, it shouldn't be too hard to graduate in 4 years.
I followed this mentality and now have 3 quarters left to finish 8 classes in order to graduate in 4 years.