I use Amsoil I have been running REPSOL for a number of years.
Break in oil is a good idea. but the procedure is key. I like breaking in the engine on SAE 30. Since the engine will be a street engine. I will assume you are not breaking it in with a dyno. I do this because I can't ride on the street.
http://www.mototuneusa.com/break_in_secrets.htm
I have used this method for years. First people showed me the run it hard but careful method. Then I read this and have used this procedure on all my motors.
First gen crank with stator is 16.25 lb