Great post, I've learnt a lot!
Maybe the first step before integrating that is having an MVP ready? If you know your way on Docker and have some React knowledge, I've built a cookiecutter that allows you to jumpstart the whole SaaS business and deploy it to Heroku in a breeze. Check it out here: github.com/ohduran/cookiecutter-re...
You're definitely right that you'd want some kind of MVP app ready before trying to get anyone to pay for it. :)
Thanks for sharing your template! I'm a big fan of cookiecutter!
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