If you are locking up the front wheel and dropping the bike, and you think it's because it has 2 rotors/calipers instead of one, then no disrespect...but you really need to work on your braking.
I get that one front rotor will still stop most dragbikes(and it's done for less rotating mass, weight on the bike, ect) but that one caliper/rotor is working alot harder, putting off alot more heat, and not able to stop you as short or as easy as 2 rotors and calipers.
I would never limit my ability to stop, and I practice braking every time I ride.
Track or street, stopping even a few inches shorter can be the difference in riding away on your bike, or in an abulance.
There are better pads out there that Will stop you sooner too, and without needing to stay hot. EBC makes "Extreme Pro" HH pads, different from their standard HH. As the EP pads are ceramic embedded. They are street pads. Stay away from "race pads", as these are meant for track/road course racing. They need to be kept hot(used often, as they would be on a track), in order to function/stop you the best.
Stainless steel brake lines won't stop you any shorter, but they really improve the lever feel.
It's firm all the time, not spongey.
Rotors will also do nothing to improve stopping. Some weigh less, some claim they cool faster, none of it would really be noticeable. A better master cylinder can stop you shorter as well. Being able to put more force on the pads sooner.
But, none of it does much without practice.
I make no claims to be Mr. super rider, but practicing to the point where you can do a small stoppie consistantly can save your life.