Is your impact wrench adjustable, and if you use it at a lower setting, I think that taking things apart has little risk. At a low setting, below the tightening torque, the impacts may loosen a fitting better than constant force.

The question is how to set the torque that it generates.

You could experiment with trying different settings to tighten lugs and checking the torque with a torque wrench. Or torquing the lugs to a particular value and seeing what setting loosens them.

I would be more fearful of cross threading.

The time saved in changing a set of wheels might be worthwhile, but how much time could you save taking your front end apart? How many fasteners are involved?

Sometimes, when you break a bolt, you can see that it already was damaged before you broke it.