seeing what you did already, and also the questions you ask I think you nkow well enough how to manage your team.
As the game isn't THAT old yet, and I know a little, but not a lot, I feel it is wiser for me to shut up, rather than to give you false info.
I'd say, go on doing what you are doing, and you'll learn what's better for you soon enough (if there is... quite possibly you are doing great already!)
I could teel you what I would do, but can't tell if it's best, and I see you like to nkow what is best...
Maybe some of the 'older' managers can give some more info.
They are not your friends; they dispise you. I am the only one you can count on. Trust me.