On Friday USC heads coach Lincoln Riley will have an extremely busy schedule. USC fans will be extremely happy to hear about the high schools and games he’ll be hitting up. Riley has school visits planned for Mater Dei, St. John Bosco and Upland. He’ll also attend Oaks Christian vs Oak Hills, and Sierra Canyon vs Servite. That means he’ll catch one half of each game. Tonight USC will have coaches at several games, including two coaches in the state of Georgia. Defensive line coach Eric Henderson and defensive backs coach Doug Belk will be in Greensboro (GA) to see safety commit Stephen Miller …