Your NYCness is going to be a serious problem. There is Bitmex which offers pretty insane leverage but they're yet another one that won't service NY state residents.
Btc-e does something with MT4 and they'll never care where you are but it sounds like a pretty cranky system.
Well, Bitcoin is on the internet, it doesn't care where the user is. Of course the problem would be getting fiat inside the Bitcoin ecosystem when you are located in NYC.
Honestly I wouldn't risk it with leveraging unless I was pretty wealthy already and wanted to make some crazy gains. You are still going to make crazy gains by just buying and holding Bitcoin for a longer amount of time and you would be able to bypass the NYC Bitlicense bullshit throught maybe meeting up with someone IRL and buying the BTC for cash. There must be ways to do it and this seems like one.
