[Build Help] Trying to put together a cheap but powerful machine for Simulations

Hey guys, I'm trying to throw together a pretty barebones system, mainly revolving around the core i7-3770k for its single threading speed and ratings. I am going to be running a lot of long simulations consisting of tons of loops and floating point calculations.

I think the processor selection is fine but I'm not really sure about the motherboard or power supply. The parts were mainly picked out at random from newegg but I'm just looking for whatever will work best and is cheapest with my application in mind. I'd like to keep the budget around 700 (lower if at all possible)

Heres my newegg shopping cart (warning adds all items to your cart)

http://secure.newegg.com/Shopping/AddToCart.aspx?Submit=ADD&ItemList=13-157-293%7c1%2c19-116-501%7c1%2c20-576-002%7c2%2c11-147-153%7c1%2c17-139-028%7c1%2c20-239-373%7c1

Thanks