"You should have it by 7:05 pm PST."

-- From one of the examples.

I have uneasy feelings about this. I know that you're targeting grunt-jobs and it's easily estimateable. But I also know that things happen and they can't always be met.

If I'm going to send out a grunt-job then more often I care more about it being done well than being on time. If you're targeting quick turnaround over correctness then I imagine that I need to spend more time verifying the work, exactly what I don't want to be doing.