What’s the problem you solve
What’s your unfair advantage
Why do you want to spend the next ten years doing it
Identify
What you don’t do well
What you don’t have time to do
What you don’t like to do
What you don’t know how to do
Figure out who is going to do it
Figure out your basic running costs
Figure out your cost to acquire a customer
Figure out what you need and how much it will cost to scale
Figure out how much it is going to cost
Figure out how much you want to invest
figure out how much to need from others
And the bottom line figure out if you really want to do it.
more to follow