It didn’t take long for C.J. Cox and Gicarri Harris to adjust to their new home surroundings. The pair of freshmen hadn’t seen a game at Mackey Arena before Wednesday’s exhibition matchup against Grand Valley State but quickly settled on the couch and put their feet up on the ottoman. Harris, who was in the starting lineup for the second straight exhibition game, and Cox showcased their talents again with a mix of midrange jumpers, 3-pointers, and defensive intensity as the 14-ranked Boilermakers cruised to a 99-41 victory. PDF: Purdue-Grand Valley State stats Purdue plays its season opener Mo…