What do you think about the pc parts for my build?

Antec says 273w on the PSU calculator, with 3 fans, and 3 USB devices. I have this PSU also. It runs a core 2 quad, 8gb of RAM, 3 drives and video. No problems. Now, you board shows a 8 pin 12v connector in a picture at Newegg. This power supply does not have a 8 pin plug for it. A adapter can be used if this is way you want to go. Not standard practice. Mine did come with one. The cables are a little short. I had to use a 4 pin extension for the board. Bottom case mount of the PSU is why. Athena Power has the cords and connectors you need. A few dollars. Antec & Corsair build high quality power supplies also if you change your mind. All else looks good. Hope it helps.