From DCist contributor Rebecca Walters: The nation’s college football season kicks off in town this weekend with the 2004 Black Coaches Alliance Football Classic. The Redskin’s FedEx field hosts this year’s pre-season exhibition game with 2003 Co-National Champion USC Trojans squaring off against the relatively local Virginia Tech Hokies. The Saturday evening game will be the first time these two teams meet, and Virginia Tech’s first formal game as an ACC team. With Virginia Tech…