I would mainly use the 100 mm asuming its a Canon 100 mm macro F2.8.
Recently used this lens in the Kruger Park and was surprised at the clarity of this lens.
Can now see why some members rave about prime lenses.
The 24-70L is a great lens but it is heavy and the image is a bit soft.
Although the 100mm is not a zoom lens you can move back and forth a bit to fit in the shot and also crop it afterwards as required.
Regards