I always rush buy both a shipyard and my first colony ship which I design called 'cheap' which is a hull+module, for about 150cr.
I will promote scientist to rush techs like plasma or Huge hulls.
I will promote generals for the extra troops.
I always put an entrepreneur on my banking planets to boost income.
I never get engineers or workers.
I do get spies and now we get a free diplomat...yay!
I have never needed an entertainer <, this should give larger global benefits to justify getting one.