Use these parts as a reference or a guide to what you want, but either of these rigs will fit what you want very nice. for reference I use newegg and tigerdirect for most of my purchases, shipping is fast for both. I use microcenter when I want to pick something up the same day.. but usually the price is a little higher.
Nice find on the processor at microcenter, buy the processor if you can't find a better price anywhere else on the net. Now that being said, thats a lot of processor for the motherboard I have listed. If you want to overclock you are gonna need a better board than the one I listed. Expect to spend at least $100 if you want an overclockable board. If you don't plan on overclocking stick with whats listed.. the 2500K is a good processor at stock speed and the potential to upgrade the board later.
Do you have any parts on hand to include in the build, if money can be shaved somewhere that means the potential for a better motherboard.