This is my suggestion for whatever it's worth. You obviously have many, many interests and enjoy learning a lot, but classes cost money, take up tremendous amounts of time, and need to "pay off" at some point.

For now, think with the logical, practical mind and take things that will "pay off". That will easily lend itself to a career and allow you to earn money. You can look up careers to your heart's content by looking up the Department of Labor's Occupational Outlook Handbook online. It basically breaks down pretty much any career you might be interested in by what education and classes you'll need to take, what types of employers hire for that job, how much you're likely to make the first few years, and whether demand for that job is increasing or decreasing. Pick one, maybe two you want to pursue right now. The more you pursue the longer it will take for things to pay off. Work hard and diligently on them until you're done. Don't change your mind because that means starting back on first base.

There will always be time to pursue other interests and gain more knowledge, and using some of your education to make money sooner will give you the resources to pursue other avenues so you can be a lifelong learner.