I wouldn’t. But as I say, test your cut height first. Find out where you really are.
Here is a bit more information on testing your cut height without cutting any metal:
As for the pierce delay, I would leave it at 0.6 for now. The worst case is you will see a slight blemish at the lead-in. Once you get things set right with cut height, then you can go to 0.55 for the pierce delay (or lower).