You could change to an i5 3470 and h77 board. No overclocking but basically the same performance as the 3570.
You could change to an AMD fx-6300 and cheaper motherboard and put more money in the GPU.
You don't need extra case fans
You don't need a power supply power cord. (it comes with the PSU)
get this monitor: http://pcpartpicker.com/part/acer-monitor-umvg6aab01