Unfortunately the trick to great execution is to say no a lot.
You want to continue to be run by great products, not process for it's own sake.
For most of the early hires you make in a startup, experience doesn't matter very much, and you should go for aptitude.
Employees will only add more value over time.
You should be able to describe any employee as an animal at what they do.
What you want to do is innovate on your product and your business model, management structure is not where I would try and innovate.