I looked at the PCCG site recently and found they can build a computer for you using the parts you picked.
link: http://www.pccasegear.com/index.php?mai ... s_id=20697
It's been over 7 years since I last put together a computer by myself (GPU cards I'm familiar, CPUs with aftermarket fans - not that confident). I tried to find out if MSY does something similar but can't find anything on the website.
Does letting the store assemble your system worth the cost? Keep in mind that the PCCG service makes YOU install any aftermarket coolers and not them. And MSY I have no clue.