Nova, I have decided that you are an Earth bender, specifically one who works with Clay. I believe you would live a humble existence as a potter who moved to the city after leaving your family farm to follow your own creative interests. Though you make enough money to get by on the sale of basic, economic pottery designs, your real happiness is creating the occasional ornate, ocher-tinted vessel depicting perhaps a historical or mythological event.
Your honest, realistic approach to life can be seen in your views on war (important only in outgrown circumstances), confrontation (partaken in only if necessary), and nature (whose human maintenance is an unfulfillable duty). These perspectives are then solidified by your fierce sense of individuality, self-prioritization, and support of human superiority.
In this sense, you are like clay, a veracious substance borne of the earth, and tempered in flame to become something more: a formidable, multifaceted, yet artistically expressive work of craftsmanship.
I'm still unsure about watching Legend of Korra. The main factor driving me to watch this children's cartoon in the first place is nostalgia, and from what I've seen of Korra the developed universe is pretty intriguing while the characters are not.
Oh, and Iroh is an excellent character, good choice.