Well I am a Chem E but through my career I have done something relating to just about all of the diciplines. Frankly, I would look where the entry level jobs are that interest you are and major in that. Once you get some time in the field, you can move around to the other ones. I have been a Chemical Plant Process Engineer, Environemental Engineer/Manager, Semiconductor Facility Engineer, and a consultant. Throughout these positions, I have designed , installed, started up and operated complex systems or all sorts. Right now I work for an Air National Guard Civil Engineering Squadron and have to say this job is a heck of a lot of fun. I am still finding things to do that I never dreamed I would be doing when I graduated.
Besides, Chemical Enginners get to make the cool things that blow up or eat what the other engineers build!
Steve, Follow your heart, it will take you to where you need to be.