I'll start by saying I don't have this board, but I do answer a LOT of questions about RAM.
Get the lowest latency 1333 DDR3 you can find that runs between 1.5V and 1.65V. Doesn't matter if it says for i5/i7, it's fine for your system.
Read this article about why to stick with 1333, skip to the Conclusions if your eyes water!
http://www.tomshardware.com/review [...] ,2325.html
Low voltage because - it's generally better designed RAM and newer. The higher voltages are often just a mfg pushing the specs up on his RAM by driving it with lots of voltage.
The G.Skill 1333 you list is a great choice in my opinion.
Don't discount the idea of some minor OC on your CPU. None is necessary for unlocking. But the performance gained by a modest 10% increase in CPU speed dwarfs the difference between the fastest and slowest RAM.
Get a replacement cooler fan. I use a Scythe Katana3, you'll find my review at Newegg with exact dimensions for it so you know if it'll fit in case easily. Or get something more basic like an Arctic Freezer 7 Pro - both around $30 I believe.
I'm sure your motherboard manual says to get a PSU of at least 550W. Doesn't mean you need that much, but I'd recommend it. I have a cheaper 585W that I'm happy with but most will say stick with a name brand like you list. Consider tho, both the Corsair 450 and 550 have a single 12V rail, mine has 2 rails and cost $30. Could buy a spare to sit on shelf and a nice steak for the price difference, LOL. But, mine doesn't have that nice big air-drawing fan, just a small one.
But then, I got the cute 3-LED Antec fans for my ugly case, so not a problem!
Good Luck - hope you find the advice helpful. Others will surely have slightly different opinions, but the principles remain solid.