You have very little disposable cash, own basically no office-appropriate clothing, and are moving to NYC. Uniqlo is your friend.
Fuck khakis. Grey trousers. Blue trousers. Some blue oxfords, a white oxfords, and maybe a couple of patterned shirts with soft collars. A black belt, because it'll match the shoes you have. A sweater or 2. And a non-shitty fall jacket.
You'll need a pair of boots and a decent winter coat, but hopefully you'll be getting paid by the time the snow flies.
Get your pants hemmed. Buy an iron. Enjoy the city.
Thumbs up for uniqlo, specifically their trousers.