The 70-200 afs vr nikkor is the best all rounder for RC - I got mine very battered and abused from adorama, for about £750 - I'd love a new one but this works OK, just has stiff zoom ring.
Before that I had an 80-200 AFD - the AFS version of the 80-200 is supposed to be great. Either are pretty fast focusing though, as long as your camera has a focus motor.
I've used a D3 for action stuff since 2007 and find the 70-200 is nice on the wide end, but a bit short on the long - so bought an ancient 300 2.8 last year to make up the long end - its a 1980's lens so its slow and not great but useful sometimes.
I've not used the 85 1.8, I've had a brief play with an 85 1.4 afd - nice but I wouldn't buy it for RC action stuff really. The lack of any zoom function I'd find a bit limiting as you can't always pick where you stand/sit/lay at a track.
I think you'll definitely be able to get some magical shots with it - its far and away better than any kit lens, that's for sure. But as far as 'the best' all rounder goes, it's easily the 70-200 vr.
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