The current GPU that I'm using in my build is a bit expensive and I was wondering what GPU could I get for less that would still get me very good performance. My build can be found here http://pcpartpicker.com/p/wdHn8d
If you're just looking to lower the cost of the system then ditch those extra case fans. The case will offer plenty of airflow with the 120mm input, 120mm exhaust, and 140mm top fan. The Hyper 212 EVO likely won't fit with fans on the side panel anyway...
I just have those fans in their to replace the rear and top because I've heard that fans that come with the case are usually loud and not very good. Do you know if the fans included are good or not?
I would give the stock fans a try. If you absolutely can't stand the sound of the fans then you can replace them later. You'll regret downgrading the GPU.