If your looking to hit the sand for anything it'll be run pretty high of its a 24 inch deep tank. Have mine on the rms mount over a 60 cube and have to run 100% with narrow lens and sps is still questionable
I just had my 2 Xr30 Pros set up yesterday, and I started my tank off at 45% intensity. I was coming from using Kessils at 100% though. My tank is 36x17x17 (49 gallon), and the light is hanging 8-9" off the water line.
Radions are extremely strong, better to start low, and slowly move up, than bleaching out your coral.