well it really depends on your qualifications... a university degree and some years of experience can get u even more. with 1000$ u can survive but i dont think so u can do well....
there are lots of indian expatriates in dar already taking over places of the locals......
So what profession are you from finance, IT, medical????
I can suggest a few things to you... get a house in Kariakoo, food sold on the street is much cheaper then hotels and restaurants, and it would be better if you drive a old car as there are a lot of car thieves here who are after new cars!!!! the roads are bad too!!!
all the best