That mouse seems unessesarilly expensive and the speakers seem a bit cheap, a custom loop is never worth it- its more for the looks or for fun, 16 gb of ram may be overkill, if its just a gaming build that amount of ram will be entierly unessesary. I would also consider not getting the h100i and downgrading the ram to 8 gb and invest it in either an ssd or an 8320/ a better board- irrigardless as it is it will game well...
edit: and never mind didnt see the second post...