There is no advantage to using a 3770 k over the 3570K for your usage
and if you definitely wnt overclock just get the 3570 [ no K ]. Same part , but no overclocking .
You dont even need 8 gig of RAM for gaming , or any other use you have listed , but it does add some headroom , Drop to 2 x4 gig . Make sure its rated for 1.5 volts
Those changes should free up enough cash to buy you a much better current generation graphics card radeon 7950 or GTX 660 ti