I'm going to take a chance with the DWs, I've now got a spare set of rims for track tires anyways, those will be the next research project on what ones to buy....
I have the Conti DW's on my car in that same same size and love them. I did install them after a 20" staggered setup, Way better. I have been to two Hpde events and they have treated me good at the track.
I've had the BFG KDW's before and woudl never buy them again. They were the noisiest tire I ever had except for truck offroad tires. I literally had toruble hearing my radio at 65 MPH because of the tread noise. The guy I sold the car to that had the KDW's on said he got great gas mielage on the 7 hour drive home because he couldn't stand the tread noise above 65 MPH. Most of the reviews do say they are a noisy tire.