I may or may not swap the 7970 for a 770. If that information matters.
I'm pretty new to this stuff so I thought I should mention it in case that matters
When it comes to motherboards, I personally avoid ASrock and MSI. This is because of a bad experience. ASrock will do if you are building the cheapest of the cheap or if you're on a VERY VERY tight budget. I assume you are good with cash. For gaming, nothing beats this motherboard: