Case:

When a project is ready , I want operational the Project on status done. 

But I need the overview form the booked hours etc.

I don't want that users can book hours on this project via tasks or tickets.

a Project does not have a stage, only the tasks. 

When I put al the tasks on done, I still can add ours on the project and create new tasks. And that's not what I want.

When I archive the project, I don't see the project hours when I open the project from the sales order.

Recap:

Is their a manner to close/block the project for operational handlings, without to loos the information, from the sales order to the project?