You could get the remaining parts for 200 less, but if you could somehow manage to at least save up some money to get the budget higher it would be better, since youd want to get at least an i5 CPU to pair with the 960 or an equivalent AMD CPU. just my recommendation since low end CPUs would probably bottleneck your 960. i might be wrong. but thats based on what ive known so far hahaha so feel free to correct me.
but if you are in a rush, try to look up some AMD FX processors or Athlons, they would fit quite nice to your budget and would give decent performance over all