Antec 1100 is a good choice you gonna love that case very much. I got a chance to feature it in the 12 best gaming cases
the other day, too.
Now just some questions out of curiosity.
Why do you need the Hyper 212 cooler? The stock fan is good enough for 2500k and with the case that you have picked you can even clock it around 4.1GHz with no heating issue. You only need after market cooler when you go beyond 4.4GHz, and it has to be liquid cooler for dissipation efficiency. It's a good thing you have decided on the 2500k instead of the new i5 that uses cheaper thermal layer. It's a really bad overclocker.
Another concern, the mechanical hard drive is the bottle neck of the computer. Even though all components look very promising, you will be dragged by the high seek-time and unresponsive performance of the conventional drive. Wouldn't you consider having a 120GB SSD as the main drive to break the bottle neck at storage level? That given space should be enough for OS and five to six games, you can add another drive in the future to expand the capacity. Also, if you stick with the 1TB drive you may have the tendency to accumulate a lot of data on it, and that is similar to putting all eggs into the same basket. If OS crashes, you may run into problem with personal files backup.
On the motherboard note, the Z77 Pro4 is cheaper on Amazon
if you are interested