Yeah, the computer Lane set up for you is pretty decent. The video card is around 1/3 of the whole computer's price, and most of the other gear would certainly make a fantastic gaming desktop.
My only advice is if you don't absolutely need an Intel CPU (Its a better brand, but the price also gets higher), I would suggest going for something more like this one.
http://www.newegg.com/Product/Produc...82E16819113331
I know even with your Intel CPU your still well in your budget, but it could be worth having a faster CPU for less, with only a slightly worse brand.

Advice for the actual building of your PC? I suggest you have an anti-static wristband to wear as you build the PC and touch all the components. Static could harm your computer.
Also, this is a great video to guide you.
http://www.youtube.com/watch?v=lPIXAtNGGCw

A good keyboard which also looks nice is the Logitech G710. It has backlit keys, plenty of macro keys and a nice palm rest. You can find it here.
http://gaming.logitech.com/en-us/pro...aming-keyboard

Good luck, and happy gaming :P