So always keep momentum, it's this prime directive for managing a startup.
In YC experience, 2 or 3 co-founders seems to be about perfect.
Just put a little pin in your mind: when you cross 50 employees, there are a new set of HR rules that you have to comply with.
The thing that kills startups at some level, is the founders giving up.
Every company has a rocky beginning.
The cost of getting an early hire wrong is really high.