good pick on the 4670k (also just bought it)
Asus us a good brand and the z87 will allow you to OC should you desire it
8gb is plenty of ram for gaming (although and this is nit picking, I would go with a lower Mhz and low the CAS instead, lower is better on CAS btw )
Good pick on the SSD
Basically yeah man, everything looks pretty good to me. The GPU is relative, depends what games you plan on playing with it.
Since you're going with the K model of the CPU, it leaves you room to pick up an aftermarket CPU cooler in the future to overclock too
I don't mind the nit picking at all! I would rather get it right the first time.
I also had never heard that a 1.6v RAM could void the CPU warranty. It is certainly something that I will look into just for my own sake, but just to play on the safe side, I'll use your suggested G.Skill RAM. Thanks!