#1, Pick what you love to do, so you are passionate everyday of life instead of hating what you do and being miserable.
From a personal story. I got my degree in Computer Engineering Technology, because I had fallen in love with robotics and computer hardware in high school robotics club. We did the FIRST robotics competition, and that was the best memory I have of high school.
However, after graduation, I've taken a job in the IT sector as a systems admin, and computer hardware has taken a back burner position as a hobby and possibly a side startup skill. I've only been graduated for alittle over a year.
Although I haven't landed a job doing hardware like I love, I do have a positive attitude to learn and enjoy the IT side of things. In that view, I have networked with co-workers, employers and peers who have years and years of experience and are sharing it with me. In a matter of a few hours I learned more about software engineering and web programming than college ever taught me.
I wish I was more organized on these thoughts, but I basically have to say, find what you love to do, diversify your knowledge, and be very damn proactive in college, because nobody is going to hold your hand. Get involved in clubs, events, etc. to meet people and network, and find new opportunities. Always talk to your professors about projects you could help with or start up. Do not become a hobbit in your room with world of warcraft or any video games, unless you're passion is to just play video games. Personally we used to hack the games in college and host private servers for downtime after studies.
As far as computer hardware, imaging, robotics, that sort. Computer Science theory plays a huge roll in that for logic analysis. Ultimately I think what you should do, is try talking to advisors, professors, and maybe even try searching for employers and asking them what they look for to prepare you for the industry.
warning, you may think you know what you're doing now, but college opens doors and you will have so many ideas and options, that your dreams may change.