My first (budget) PC build - HALP (updated)

Right, so the pic below (subject to feedback) is going to be my first self-built PC, for running Battlefield 3 and the like on some okay settings with some okay fps... I would just really like some feedback of any kind (please, be gentle with me :L). It may seem pointless, but really, whether it's pointing out compatibility issues that PC Part Picker didn't spot (because there is NO chance of me knowing) or recommending a better part for the same money (and money is key, I don't want to spend more than I already am if I can help it), anything short of flaming and trolling is much appreciated.

Pcbuild_zps1896b3aa_medium

UPDATE: Okay, so I'm changing (so far) to an: