Can somebody offer me a bit of intelligent career advice? Preferably a New Yorker.?

Long story short: I have about a year & a half left of undergrad here in Houston. My major is political science (I have always had an interest in the law/government). However, my heart belongs to the fine hearts. I love movies, music, museums, etc. Those are things that I feel enrich my life. The only problem is that I am afraid to take the risk of investing so much time and money into and education in that field. Realistically speaking, it is not easy to flourish in that area. Curatorial work is competitive as it is! I know I should do what makes me happy.....but how will I ever make the kind of money I want & need? The money makes a difference because NYC is my goal-I lived there when I was younger & I want to return. And the cost of living is insane-to live comfortably within manhattan I need to make upwards of 80K. If I knew I could work in an art gallery or be a professor of art history & live in a small town home, I'd have no problem. But I just don't see how thats possible.