I got the 2nd I7-4770k system up and running for my wife about 6 weeks ago. Her old system a Phenom II 1090T was shifted over to my son and daughter is now our 3rd system. The only problem was I paid $300 for the parts, but needed to spend another $350 for a new 24" Display, a Samsung EVO 500gb ssd(this went into my primary system and my 240gb moved to the 2nd system), Mouse, Keyboard, Power Strip, 2.5 to 3.5 mounting brackets, etc. So really the system cost me about $650 to get up and running.
But your sig says 16GB RAM. Or did you buy another identical set of components only with twice the memory. That would be crazy unless you're doing a build for someone else.
The reason my primary system still has 16gb is because it's running its 2400 DDR3, I took the 32gb of DDR3 1600 got from him and split it between the 2nd and 3rd computers so all 3 now have 16gb of ram. The Phenom II had 2 X 4GB before the upgrade.
Intel I7-4770K, MSI Z87-G45, 16gb G.Skill DDR3 2400, Asus 970 Strix, Sandisk 240gb SSD + 1TB WD Black, Cooler Master Hyper 212 EVO