Another offset and tire question

[Cheech2017]

For those with 2014+ Sierra/Silverado 1500 I'm looking at 20x9 +1 0ffset with 305/55s.

 

My question for those running this set up, how bad are you blasting your paint with debris and in what areas if any?

 

I think with mud flaps I can get coverage behind the wheels where I need it to avoid chips on the paint, my concern is the upper parts of the wheel openings on the fenders. Anyone have any concerns or issues with paint damage on that set up?

 

Thanks!