Build looks great. But bear in mind that when overclocking the 8350 gets hot and quick. While the stock cooler with the chip is rediculous and sucks, the coolermaster will do a great deal better. But if you plan major overclocks, you will need to dump well over $100 into cooler along. I spend $600 just to get mine to 5.2ghz and even now its really playing along the lines of max temps.
But that said, i really havent had any good experience with the gigabyte motherboard, id recomend the asus 99m5afx pro borad, the board will set you back $150 but is well worth it. My opinion and from what ive gathered from hours and hours of research on boards for that chip, would be the pro board, then sabertooth and crosshair. The top two really dont overclock anybetter but have waterblocks available for chipsets. Some extra on board features, but the pro is well worth its pricetag, with or without overclocking.
Otherwise the 760 is a good solid medium graphics card, should be able to play high settings most games, and everything else looks great, psu/ram/hhd did a good job. I'd just recomend a mobo swap, and with cooler picked should hit 4.5-4.7 without heat problems. Not really worth dumping anymore into cooling as you really wont notice a difference, lesson i learned.