-cut the ram to 8gb. there is some patriot ram on sale at newegg
-cut on the board. overkill.
-get a less power hungry card. a 660ti or a 7870 will do
-make sure you get yourself a samsung 830
-i use seagates but WD is good as well
id get thishttp://pcpartpicker.com/p/nGOU
and this case. similar to the GT07 but has sound dampening and is 30 bucks cheaper. you can use a regular tower case and save even more thoughhttp://us.ncix.com/products/?sku=75057&promoid=1230