It looks fine, though me personally, I would actually go with AMD for the RANA x3 440 - $76 and an AMD board.
This board is $110 after rebate and also allows Crossfire in case you ever need ithttp://www.newegg.com/Product/Product.aspx?Item=N82E16813128427&cm_re=gigabyte_790-_-13-128-427-_-Product
The i3 is a nice CPU, but in this day and age I prefer to stick with at least 3 cores on my CPU. The AMD has the added bonus that you can easily upgrade it in future if another game you like comes out which require more power.
I would also change the RAM to G SKill Ripjaws as they are faster and I like G Skill a lot, they will cost $105, but this is personal preference.
In terms of what you want it to do, your system will play SC2 fine