ECON010 is held through the College Economics department but is only open to Wharton Students - it combines ECON001 and ECON002 in one semester (doesn't make it harder, just means you go more quickly). So, unfortunately, you are not allowed to take that course (it's one of the very few courses you aren't allowed to take as a College student!).
I'd advise against taking any Wharton courses freshman year just because you have College courses to get out of the way, and the WH course could slow you down. That said, there are a few courses that are popular among college students.
LGST101 - Introduction to Law and Legal Process - It's basically a survey of civil law and interesting for those who are curious about what lawyers actually do.
LGST210 - Corporate Responsibility and Ethics - I know, it sounds like an oxymoron, but the course itself is quite interesting.
STAT101 or STAT111 - Introductory Statistics - 101 is more business-oriented than 111, but both are interesting if you want to learn the basis of statistical analysis.
OPIM101 - Introduction to Operations and Information Management - If you have interest in entering the business world, this will help you. The course description makes it sound really intense, but it's basically just a course that teaches you how to use Excel to its full potential.
MGMT101 - Introduction to Management - It's exactly what you might think it is. I've heard great things about it
All of the above are good courses to take as random electives during your sophomore and later. I'd recommend taking a look at some of the inter-school minors; if something jumps out at you, take a Wharton class in that, and if you're interested enough, you might wind up with a fun minor that you otherwise would never have done. Note that if you're thinking you can get some kind of advantage in life by taking Wharton courses, you're mistaken. Just making sure you have the full story!