AAA, possibly MLB if there are enough injuries or things go very badly.
Lewis is your starting CF at some point, with Buxton at DH most of the time and playing 40 or so games in center. Larnach in left and EROD in right eventually. Martin (if he's ever healthy) the backup CF and LF. It is also likely Wallner forces his way into the discussion at first, DH, right field.....That depends a lot on Larnach's health.