Why would you need the rotor adaptors? The Road Winders take any standard 5 bolt H-D rotor if I remember correctly. You would only need the rotor adaptors if you want to put your stock rotors back on, but for the price of them you should be able to find a nice set of open floating rotors (like what comes stock on the '08 and up AW or the '07 VRSCX).
I have the Brembo calipers and the std HD floater (Road WInder rotor) is 11.5 not 11.8 inches. AND I hate how most of the HD rotors cover up the inner part of the rim. With an adapter and stock rotors it will be the right size and open up the center of the rim, personal taste. :banghead: