If you have several ideas that all seem pretty good, work on the one that you think about, when you're not trying to think about work.
Every company has a rocky beginning.
You want to continue to be run by great products, not process for it's own sake.
The cost of getting an early hire wrong is really high.
One thing I tell startups all the time is that the best way to grow is to make their product better.
You really want to know your cofounders for a while, ideally years.