Yeah, this. They need this to be completely test-driven. Build a foundation and build out/finalize in pieces. If they had an actual dev team that knew what they were doing, someone would set them straight. They also need a ton of time to gain an understanding of what every part of the existing codebase is doing.
Yeah, the ideal process is something like this:
I would budget a couple years. Even a smaller codebase would take more than a couple months.
Yeah, this. They need this to be completely test-driven. Build a foundation and build out/finalize in pieces. If they had an actual dev team that knew what they were doing, someone would set them straight. They also need a ton of time to gain an understanding of what every part of the existing codebase is doing.
well years are made of months