Best way to plan a new SharePoint

I’m looking for some ideas on how best to setup SharePoint. We are a new home builder that wants to digitize our workflow. We currently make a binder per house build or Reno to store documents for each project. There are templates we use for each project that are the same. Multiple team members work on the documents while the house is building, and we also would like to digitize our whiteboard where we track status and current state of each build as they are in progress.

Some ideas we came up with:

New site with a unique document library per house build / Reno that we follow until build is complete

Main team site with a List to track the statuses

read only document library for our templates that can be copied to new sites for editing as required.

What are some ways we can use SharePoint that we haven’t thought of, or may be better than the above?