Nothing is more permanent than temporary
Every action or even solution cause some afterwards, so when we try to make something fast and temporary but not appropriate for its function, we unconsciously erode our project groundwork and turn workflow of our project into "spaghetti bowl". Every line of code, every text paragraph, every detail of your project is the brick of the whole project. And critical amount of broken bricks can make our project inconsistent and not well enough!
That is why my requirement to buy domain name before our coworking start. I just strive to avoid ambiguite from the first steps and give you an option to be recognized in future, when you will need to improve your project in a few years.