I like it. This is already an 80% solution if not higher. 

I particularly like the cost summary and phases of work part.

Can we add a “back payment” segment? Meaning only a very limited part of the proposal can be funded paying for previous work. Say no more than 10%. This will discourage a lot of back payment and a clear path of point forward auditing.

This is a very standard practice in the real world.

Thank you for putting it together.