Ok, that explains the i7
CPU: If you aren't going to OC, you can save $30 and get the i7-3770 instead of the 3770K. If you are OCing, the Asus LX2 mobo might not be suitable.
GPU: The DDR3 based HD 6570 isn't much better than the HD4000 IGP. Not worth the $70-90. Your apps can benefit from GPU acceleration. If you think you need to bump up beyond the HD4000, consider the HD 7750 @ ~$100 for a passive version. But, try running your apps with the IGP first and see if it meets your needs.
Case: The 550D is a very nice case. You could save ~$20-30 and use the Antec Solo II. Plus you get the drive suspension. Or you could drop down the uATX and get the Fractal Define Mini for ~$100.
Mobo: The ASUS P8Z77-M uATX is an alternative board.
PSU: System stressed load will be in the ~140W range...~195W if you get the HD 7750 and don't OC. Don't see pricing for the Enermax, but the Seasonic G 360 is $60.