Just a quick advice my friend: Don´t delay the payments/pricing part. Think on it from Day One.
Surprising rules for successful monetization Innovation is the most important driver of growth. Today, more than ever…www.amazon.com
And if you haven´t contact to Stripe´s Atlas crew, just do it.
If they don´t response, just work with the Braintree Payments team. Even you can contact to Bill Ready directly on Twitter (COO at PayPal, CEO at Braintree Payments/Venmo), or you can contact to the Sales team.