I changed the motherboard in order to have USB 3.0 support in the front (as the one you picked out doesn't have a USB 3.0 header); found some faster memory for a bit cheaper, added some more storage (as it was only 10$ more); threw in a much faster GPU (the 7870 trades blows with the 660ti, but is much cheaper); and changed your PSU with a modular one (which will help out with cable routing), and it's also a tad more efficient (80 Plus Bronze instead of 80 Plus).