Honestly all of these things should be considered. If you have a edible product, consider how long you have until your product expires.
You need enough to meet your sales demands, so run some numbers on how much you need to meet these demands.
You need to have good communication with your employees, employers, and investors. If you don’t, things can go terribly wrong! Make sure you don’t make this rookie mistake! Set up something so you have good communication with the people you work with.
Good luck!!!