2015 Audi Q5 3.0T Premium Plus Rotors
 

I am looking into replacing my front rotors with ventilated rotors but haven't selected a brand yet.

I intend to keep the rear rotors Audi "stock".

Has anyone done this brake set-up on their Q5?

Is there a reason why I shouldn't do this? I am going on the assumption that
the front braking system supplies most of the braking force.