A lot of folks still buy prebuilt machines...which imo isn't a bad thing its better than buying an emachine at Walmart and then a gpu to game lol.... just built myself a matx i7 haswell with r9 290 and I get good airflow with the coolermaster n200...however this setup seems to be super tight and have little to no airflow...

I'm confused about the fan setup on the radiator. Is it blowing into the radiator? If it is above the half circle hole on the PCB, wouldn't it reduce airflow to the GPU? You can still fit an 80mm fan over the GPU and at least a slim 120mm fan above the CPU depending on how thick the waterblock is. I like the setup, but I would shorten the cables or use a modular PSU.