The advice you are receiving here is very - if not varied - sound. On the cultural side, it's not easy. It's actually much harder than it sounds. I come from an Anglo-Argentine family and was raised in the states. My boyfriend is Argentine and we spend a lot of time here. Even with all the background I have, it's not easy. In the states we are taught to strive, to compete, to work hard, to work harder, buy a lot of things, and to "succeed". These things are important but they'll destroy you if you let them rule your life in Argentina. Here's it's a lot more about being present and enjoying the small pleasures (they're small because there's not a lot of money but it doesn't matter). It's hard to break into new social circles but you have a major step up by speaking the language already. Take advantage of that amazing asset and the more that you are willing to convert to the Argentine castellano the better.
The best advice I can offer, completely unrelated to your career because it doesn't matter that much right this very second and you have tons of time and you'll figure it out and money is just money after all, is that you get the hell out of Palermo sometimes. It's a great part of the city but you aren't going to integrate by staying there. After a really challenging stint studying in BA back in the day I spent 6 months camping and hitchhiking, from south to north and that's how I made friends and fell in love with Argentina. This country is filled with fun-loving people with enormous hearts. Go do what the locals are doing. Get out of the city when you can (the buses are easy!), take in the scenery (Argentina is amazing and beautiful), sit around, drink mate, make fires, cook food, play the guitar, play with your friends' babies, fall in love with the girls, and chill out. If you don't have time to travel take advantage of the fact that you can cheaply take classes in just about anything in BsAs. Work on your personal growth and meet people that way. If you can't relax here, you'll self-destruct. If you aren't into these lifestyle things, then go to NYC and bust your ass and have a successful career and spend all the extra money that you earn paying your rent and trying to buy experiences. You are in Argentina for the experiences, not the money. When this is all said and done, you'll remember the experiences, not the money. And the best experiences here will probably be free. HAVE FUN!