page/content structure

This post is a bit long winded so as to give you an idea of the site as a whole and building in a way that doesn't lock me in to any corners in the future. As more and more dynamic content comes in to play a back-end will be built so I'm not the only one managing content but for now assume 99% of the content is static.

I need help with page structure, where do you draw the line between like content to put it on its own page?

So I was asked to develop a little site for my Martial Arts School the site should be mobile friendly. Most of the content is static but I am a little stuck on taking the content and deciding was gets put on the same page.

For example, location and hours can go on the same page I am sure. Maybe some small module that tells whether the school is open on a given day (sometimes schedules don’t line up and we have to close in observance of a holiday, weather, or other schedule issue). What about an event module for showing an upcoming tournament or a belt test? Granted the last two are not static content, but would they all go on the same page? Or the main page which would be an overview page, maybe the occasional news post

Another example is the about page where there will be information on us as a school, our instructors, our federation (group of schools all under the same grand master) what to expect as far as class structure, history of the art itself. I’d hate to have all of that on separate pages because while manageable on a desktop or larger device is easy enough having all of those as separate pages with links in the navigation bar while keeping at least a 40px x 40px size touch area per link will fill up screen space quickly.

and then...

In the future in a later iteration, we’ll want to add a small store that they can sell some PPE (personal protective equipment), new Do Bak (uniform or Gi), maybe a monthly subscription so a user can pay for classes a month ahead.

Also as a junior instructor I know that it would be nice to have a way that students can sign in to class from the mobile or send a quick “can’t make it” message to my cell phone form the site. Because there have been a time or two where families go on vacation or the weather is unfavorable and I’ll show up to teach and no one will show up but never let me know so I spend an hour stretching and working on my own stuff waiting for someone to show up.

And allowing user registration so the student or parents of students can track their progress, and should be easy enough to tie in to an 'app' I have been wanting to build for the federation -- what is essentially a companion along side class time where a student can see whats required for their rank, see the textual information, audible commands, and even the videos. Or check their standing withing the federation, projected test dates etc.