What am I going to need to look for in a motherboard that will support the products I have chosen? I don't know a large amount about computers (especially motherboards), but from what I saw, it seemed like a lot of the cheaper Mobo around the $110 range didn't support DDR3 1600 RAM. If this is too much of problem in getting a Mobo around the price I want, I would definitely be willing to switch to 1333 RAM.
P.S. Assuming that I have no plans to upgrade to SLI, would the 520 watt power supply be sufficient for my build? I'm willing to upgrade to a higher one if need, just don't want to uselessly get more than I need.
If you're just sticking with 1 card then I would probably get this one. GIGABYTE GA-870A-UD3 It's $106.99 and has pretty nice features for the price. And yeah the 520W should be fine and give you some room to overclock a little bit.