News for you!
You don’t need your web software to do everything you need from the beginning.
What about adapting your business to a an existing solution to the market or to a customized solution with the minimum viable product?
Imagine you create a huge set of requirements of how things you think may work. You developed them and after few weeks in the business that is not what you need. You just threw away loads of money and time.
You can always do things in the old school way. By hand.
Oh yes maybe is not that scalable but when you achieve the moment that you can not handle the workload anymore, you probably have enough money to spend in order to automate those processes.
And more important! it gives you enough time to learn about your business and iterate over what customers really needs.