Update Aug 4th 2015:
Turns out that the Liquid Cooler is leaking and I have to get it replaced, using stock cooler ATM. Noisy as hell.
I achieved better temperature at idle by applying Arctic Silver 5 thermal compound.
Temps recorded for CPU at load was when I run Prime 95.
My first PC build for myself. I have been configuring and building PC for my friends before. I mainly use it for video editing and I find it way more powerful and quieter than my MSI GE40 laptop while at load.
I move quite often because I'm a student and beefy looking cases are not easy to move around, so I went for the 250D for compact and elegant desktop look.
One thing to note here is that the H100i GTX WILL NOT FIT inside the case if you mount it conventionally. If you're thinking of using this cooler with this case, make sure to unscrew the lower mounting bracket for the radiator or else the motherboard and the radiator with fans on won't fit. you can opt for slimmer fans but I want to stick to Noctua NF-F12 so I had to hack a little bit.
I noticed that the CPU temp is higher than usual and I'm not getting the OC clock speed that I can get from a 4790k. I might need to replace the thermal compound for the H100i GTX.