Here it is. Builds up to ~710 m/s at a distance of 60 km, cruise altitude can be safely set to 250-300 m. Can hit CVN-size target at 700 m/s from 300 m altitude. Since it starts to turn from cruise altitude to aim a target only at dist of 2.5 km, torque and steering were amped up significantly to make the hit possible, and also to compensate the absence of proper PID-controlling - without it low cruise altitudes are impossible because missile's autopilot would bury it.
Drag was increased, and thrust of both cruise and boost stages was decreased to match launch and speed profiles.
Also I will be very happy if you tell me how to give the booster stage that big flashy exhaust like Scud's.