I am also building my first new computer and im getting the that very Mobo i have heard good things.
I am getting the i5 2500k just because its a few dollars more. If youre not going to be over clocking you might not want to get the cpu cooler, all the processors i seen come with a cpu fan.
I am getting G.Skill (2x4gb) ddr3 1600 it was recommended to me from a friend
nice choice on your power supply being modular, it will save you the headache with all the wires.
The storm scout case is one of the most popular cases out there and a great price. Probably going to switch to that.
my video card is going to be the gtx 560 ti
here a really cool site to find the cheapest prices and too see your build all together, the following link is to my build im getting.http://pcpartpicker.com/p/62T0