For fans go here and make an account and give the OP your situation and he'll tell you what to get. He really knows his fan stuff.http://www.overclock.net/t/1321074/tator-tots-big-quiet-120mm-140mm-fan-round-up/1530
If I were you I would get a single 200 in the front and top with a 120 on the rear and side.
What are you looking for in a case fan? Extreme airflow? Quiet operation? Budget?