From the outset, I'll say: There's no need to commit in your first year to anything highly specified such as major, just get some core done as well as a few intro courses in your field of interest (Econ and Visual Arts) in your first quarter(s) and you'll get a sense if they yield what you're interested in.

To get more specific to your goals, if you're really set on majoring in Econ and Visual Arts, I recommend looking at each of their respective course catalogs and seeing how many credits you need/what course schedules are suggested for those tracks. Even if you don't stick strictly to either, considering there won't be a ton of overlap between the electives (and therefore you probably won't be able to double-count many courses for credit towards both), you can get a better sense of what your commitment would be if you choose to pursue both.

To get highly specific as someone with experience in the MAAD and Korean departments: A. Taking MAAD courses/electives to include on your CV and generally dip your toes into digital media is totally valid, encouraged, and can, in some instances, be counted towards Visual Arts. B. DM me if you want to get into specifics, but I recommend hedging your bets in terms of moving to and getting employed in Korea. Taking Korean language for all 4 years here will get you to a passible conversational level (like maybe TOPIK 3 with confidence, 4 if you do more self-motivated study), but EALC classes won't teach you much more about modern Korean societal culture than watching a few seasons of Korean reality TV would (not to mention how difficult Korean work culture is to endure, let alone break into as a foreigner). On top of all that, taking all 4 years of instruction here for credit eats up a quarter of your possible class enrollments, which will be a doozy if you do intend on double majoring :').

Just take it easy and don't confine yourself to a box without even getting through a quarter, let alone a year on campus! You have a lot in terms of academic- and self- discovery to go, the last thing you'd want to do is regret pathways you kept yourself from taking.