Read and read and re read Noise abatement 1 procedure.
Max acceleration is 3000 ft...so you can accelerate earlier...however since the most noise print happens during acceleration,the latest the better..i suggest you accelerate at 2000 feet,as to reduce the pitch and provide a smoother level off.
If you take off from tel aviv to the north,there is indeed a limit altitude of 3000,so id reduce thrust at 800,accelerate at 2000-2500 and maintain clean speed until you pass the 3000 ft altitude restriction then as get a higher level accelerate to enroute climb.
If traffic is dense,accelerate to 250 after the flaps are retracted.