What type of engineering should I do?

I am trying to get into college for the fall of 2011 for engineering just not positive on what type. I have narrowed it down to mechanical, electrical, nuclear, and areospace. I would go for aerospace without a doubt because I love aviation except that I want to have my own business someday and anything aviation related takes a huge investment to get started in. Where as if I went mechanical I could start a business building custom cars or motorcycles or something similar with a lot smaller investment. I also have a huge interest in possibly getting into building some type of unmanned radio controlled vehicles like the military uses so I think electrical would be also be a good fit. Nuclear power has always interested me to some extent but a lot of people are against it, I think mainly because they dont understand it and believe false facts about it. Nuclear power may get big again someday but with everybody looking toward safe renewable energy it maybe dieing off. So what does everybody think. I am leaning toward mechanical, I think it is the least well paid of them all but I think it is the broadest field so I could work anywhere on just about anything. I thought about going for a double major but I heard keeping a PE license for one field is already challenging and time consuming enough. To my understanding if I wanted to work for myself a PE license would be a must have for me. I would love to work on both the electrical and mechanical aspects of different machines but it looks like that is more than one person should be trusted to do. I Know nobody can decide this for me, just looking for some outside opinions and ideas here. Thanks