This is totally la-la-land utopian dreams! Because, those house and barn won't be like that. You have to get rid of the single-family house ideas! Kill it! Kill it with fire!

Instead, you will have several large buildings.

Each person will get a suite of rooms. Bedroom, sitting room, bathroom, closet. Something close to a tiny apartment or a bed sit. And these go around the outside of the building. With a deck running around the exterior. So, each little-suite has an interior door, and an exterior door.

In the center of the house will be large rooms, for gaming/playing music with friends, for eating, and of course, a big communal kitchen.

You will not want a "barn" for your communal money making activities.
You need a real shop, that is set up for the economy-business you/community chooses.

And, of course, you will need a large greenhouse, with hail-shields.

I am glad that you are already thinking of small community homesteads. They are the future.