The power range is 34 to 38 W, which is just about identical to the settings I mentioned above: 36 W. The speed range might be a bit fast, but laser power numbers have, at best, one significant figure.
The focal length of the lens has a lot to do with how critical the material flatness will be, but if you think the sheet is warped, then it’s probably too warped.
With the speeds & powers bracketed, you can start tuning for best picture … without spending half the day watching a laser make chicken scratches!