For gaming, the i7 is not going to give you any benefits. Stick with the i5-3570k.
Unless you plan to run more than 2 GPUs in CF/SLI, get a Mid-Tower Case like the Carbide 500R
. It is completely tool-free.
Get RAM without the heatsinks. Something like this.
If you don't plan on SLI, cut back the PSU to a 550W unit; something like this
With the $ saved above, get a 120GB/128GB SSD like this
. Those are the three most reliable SSDs on the market. Check out Tom's SSD Hierarchy Chart
for their tiers.