Remember you will need a Hard drive and an optical drive in that build.
If you are going to be doing light gaming on a bigger monitor then that video card won't do. If you are looking for a decent video card that can play light games at higher resolutions then the onboard look at a 4650 or a 4670.
I would recommend getting a better PSU then that. The power supply is a very bad skimp at. I got a cheaper PSU and am having lots of issues with the thing. Corsair makes the best ones, but if you are looking for something cheaper you could get something like this Newegg.ca - PC Power & Cooling Silencer PPCS420X 420W ATX12V 80 PLUS Certified Active PFC Power Supply - Power Supplies