Wasnt judging its performance, as that largely comes down to how much money you have. But I will say it will perform pretty much top-notch in games and adequately for amateur video editing.
You haven't made any bad choices with components (except the PSU), have gotten well known and reliable brands.
There is room for improvement, for instance getting a better SSD along the lines of a Samsung 830.
You could get a Seagate Barracuda to save yourself a fair bit of cash or another TB of storage.http://www.directcanada.com/products/?sku=14120DR8182&vpn=ST2000DM001&manufacture=SEAGATEhttp://www.directcanada.com/products/?sku=14120DR6651&vpn=ST3000DM001&manufacture=SEAGATE
So while it can be better, you largely have made good choices that I didnt really feel the need to point out before. So you did "fairly good".
EDIT: Also about the PSU, if you are considering Crossfire/SLI later, then get a 750W unit now. Saves you money in the long run.
Also dont get that OCZ unit, not the best manufacturer when it comes to PSU's. Would get this unit instead.
Corsair TX750, 80+ Bronze. $115 ($25 USD rebate)http://www.newegg.ca/Product/Product.aspx?Item=N82E16817139021