Yes, maximum. All you do by turning down the setting is make the break in take longer.
Break in is very over estimated and over-worried about though, Just use common sense during the first 100-150 hours... don't pause images, don't watch content with black bars for more than the length of a movie, then display full screen content for at least as long as the movie ran, though doubling the full-screen time isn't a bad idea whenever possible. Try to avoid channels with stationary logos, especially the bright colored logos like History Channel and some of the others. The "transparent" logos aren't as bad bit still, you don't want stationary content on the screen long, especially when the TV is new. News and sports channels with tickers or other graphics that stay on-screen for a long time aren't good either.