Looks like you have triple channel memory which isn't compatible with the 2600k. You'd be better off with 2x4GB.
If you intend to game, you are severely lopsided between your CPU and GPU. You'd be better off getting an i5-2500k and spend the $100 difference on perhaps a 6950 or 6970. Or a 560Ti or 570.
As someone that has owned an H50, and currently owns an H70(traded for on craigslist) I'd recommend a good Air Cooler. For the price you spend on the H50 you can get a top of the line aircooler like a Noctua NH-D14 or something comparable.
950W is excessive for the PSU. For $154.99 you can get a better efficiency PSU from a good manufacturer, that will most likely be modular.