Good build but there're some things I'd change. MB: Gigabyte Z77-UD3H Cheaper and perform great RAM: Go for 2x8gb so that will leave room for upgrade. I used to run 16gb for 3DS MAX but had to upgrade to 32. When I render, i use about 28gb Cooler: the CM Hyper 212 is great. I actually run the 3770k with that cooler. However, if you're gonna OC, you may need to consider an even better cooler. I'm currently OC-ing at 4.4ghz and the temperature is 72C at 100% CPU load.
Asus has pretty cheap parts and they're quality built if you're looking to build it yourself. I'd avoid Amazon for good parts, Tigerdirect would be your best bet or just Google custom built computer parts, you're bound to turn up a site or two that sells cheap parts. Honestly, Intel is going to slaughter that $1000 budget, you're better off going with AMD. AMD has quad core processors for much cheaper and the same quality too.