Varied revs and up to 3/4 throttle for first few hundred miles, the occasional full throttle burst up to 4500 won't do any harm. I takes about 20 hours of varied driving to do the initial bed in. Thereafter, further settling in takes place over about 10K in my experience.
I always start with the oil temperature showing. You can't go by the water temp gauge as the coolant heats up very quickly on these motors.