First thing, I'd go with a more high end motherboard. Asrock makes that nice AGP/PCIe motherboard, but since you are getting a new PCIe graphics card there's no point in going with Asrock, there's much better quality motherboards out there. I'd go with something like the:
http://www.newegg.com/Product/Produc...82E16813131584
That motherboard has two x16 PCIe slots which would allow you to do Crossfire down the line (two ATi graphics card) though IMO doing any of the Crossfire/SLI setups is rather stupid, that might be harsh but there are many potential problems with both, so I would personally go with this board:
http://www.newegg.com/Product/Produc...82E16813123258
IMO a better case could be choosen. Some dont care, but when you build a computer I think you should invest in a good case that has good air flow and a design that wont look cheesy after a month or two. Its personal perference though.
The rest looks really good to me.