The classic studio portraiture distance was about 8-10', based upon the type of portrait and the most common FL in use for the format to shoot that type of portrait.
Yes, step back. The reason I rarely do portraits is that my father would ask a stranger to take a portrait of them. When they said yes, he would take out his Mamiya C330 and practically shove a lens up each nostril! Seeing all those looks of 'OMG what have I gotten myself into!' has had the effect that I only take portraits of friends.
Warning!! Handling a Hasselblad can be harmful to your financial well being!
Nothing beats a great piece of glass!
I leave the digital work for the urologists and proctologists.