Start-ups: Creating Your Customer Journey

It's no question that creating a quality customer journey is critical for any business. But the businesses that implement it quicker will be better off in the long run, in my opinion. 

When start-ups are constructing a customer journey, here are 3 questions I recommend asking:

1. If I could put 100 of my niche customers in one place for 60 seconds, what would I want to say to them to get them interested in my product or service?
2. If every new client had 24 hours to use my product or service before they could get a full refund, what would I do within those 24 hours to get them to sign on for another 3 months?
3. If every client that signed on for 3 months could get a full refund after their term was done, what would I do within those first 3 months to ensure they see long-term value in my product or service?

What are your thoughts on this? Do you have first-hand experience with creating a start-up customer journey?