Pitching the yeast slightly cooler than the fermentation temperature is better than pitching warm, and then trying to cool off the active fermentation.
I ferment US-05 at 66° to 68°F. This avoids the peachy flavor from fermenting at less than 65°. I've pitched as low as 48°, lag time may only have been increased by 6 hours. Lag time is very subjective because other variables also have an effect.