I liken this more to a bounty the way Poseidon was paid for by AROS.
"How much to give us the code?"
Money is raised.
Source is released.
I don't see it as a Kickstarter type project where money is raised and a product must be released on a schedule.
The release of the code would be the end of the funding drive.
Development based on it would probably fragment a bit at least at first and if it works, it works. No timeframes needed.