For shooting sports and wildlife with a full frame camera, you need something like a 70-200 or 70-300 f/4 or faster. With that said, with the 24-105 you are going to have to crop a lot to get things close enough. As for setting up the camera I would go with Shutter priority and auto ISO. Set your shutter speed to 1/500 or faster while keeping an eye on your ISO. You'll have to shoot several frames to get an idea of what works and what doesn't.