You need unstoppable people. You want people that are just going to get it done.
Even though plans themselves are worthless, the exercise of planning is very valuable and totally missing in most startups today.
So always keep momentum, it's this prime directive for managing a startup.
Really dig into projects people have worked on and call references; that is another thing that first time founders like to skip.
Experience matters for some roles and not others.
Mediocre founders spend a lot of time talking about grand plans, but they never quite make a decision.