Idling isn't helping seating the rings.
Ive seen numerous new bikes at the track, burning oil. I asked them how do they break it in. "We just let it idle" From there on all my new stuff i run it hard, not an idiot, but run it through the rpm range, without keeping it as a specific range for a long period. Do what you want though.
Also, i don't tend to let anything idle anyways. Diesel fuel washes down the cylinders, plus more likely to get fuel in the oil. Im no mechanic, but my shit runs mint.