Hi Ben,
Those look great, it looks like the combo is focusing well. I agree with Rob, if you have the light lock the aperture at f4-f5.6 (or higher) and adjust the ISO to keep you at a minimum shutter of 1/1000th or more. While I like shooting at f2.8 with the 70-200 as well you just get more keepers in general stopped down a bit, more DOF and less chance of an OoF shot if the cam doesn't focus exactly where you're pointing it.
You mentioned the AF on mode 2, are you talking about the IS mode on the lens or are you talking about Aiservo mode on the camera (vs one shot)?
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