Primary deal stage controlled by sub-deal/related list?

I am a materials supplier in the construction industry. In our scenario, each construction project (Deal) will have multiple products and the status/stage of the product will influence the construction project's stage.

Details:

The Primary Project has its own set schedule, which will be our stages (e.g., Bid Date, Award Date, Start Date, Some Product activities(TBD), and Completion).

Each product has its own stages (e.g. specified, waiting for others, declined, accepted, lost to another product)

Each product has a defined window for changes (15 days before the bid and 60 days after the award). If the change order is not answered, then it is declined.

If no product is accepted, then the primary project is closed.

If a product is selected, the Primary Project remains open, and additional tasks/stages are added to the product before the next Primary Project stage is advanced(e.g., delivering samples, supporting documents, setting a delivery schedule, etc.).

When each product has reached a conclusion point, the Primary Project stage can be advanced.

It is only after all of the products have reached the final stage that the Primary Project is closed.

Our desired structure would be a primary Construction Project with a Construction Product as a related list associated with the Primary.

Primary Deal - Project Name

Pimary Deal - Stage - changes when Sub Deal/Related List has reached a decision point.

Sub Deal/Related List - Product Name

Sub Deal/Related List - Stages

Does anyone have a similar scenario with a tried solution?

The Quotes module will need to reflect the product Name for organizational purposes.

Is a blueprint the way to address the "additional items" that need to be completed when the product is accepted?

Thanks in advance.

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