I agree. Don't fly the airplane off the trim. Fly the airplane, then trim.
Taking time to trim while handling an engine-out on the runway is an unwise idea in the sim or in the real world. Concentrate on maintaining the centerline, pitch to put the pipper on the 10 degree line, and fly into V2. Your leg isn't going to fall off in the few minutes it takes to get airborne, get established, get turned, and start cleaning up. The trim is going to change considerably as one begins cleaning up and accelerating anyway. Don't complicate it and your takeoff by trimming rudder on the runway.