Good luck on the double Q's and MACH pts goals! That's very impressive. Of course, you're running those fluffy dogs which is really not much of a challenge . . . . Compared to Rotties that is.

The 70-200 should give you enough reach. I've used a 70-200 F2.8 to shoot several Agility Trials (although admittedly I'm not nearly as competent as Jim Poor) and it was more than adequate. Please share your results.

Jim