The computer runs a lot of zone against the option. It should be running man coverage with a QB spy. This is part of the game where it's Madden's College Football.
Yes. Your base playbook type is carried over from what I've seen. I took an Air Raid and replaces about half the plays with a Pro Style and it was still Air Raid. Make sure your coach's Running is 80% (20-80 is as unbalanced as you can get). If you keep it at 50-50, you will run the same passing plays 6+ times per game.