I'm in Cape Town, South Africa, (GMT+2) so bear in mind that I might not always be able to respond immediately if you're in a different timezone.
I work a regular 9am - 6pm day.
I don't work from 6pm on Friday until 9am on Monday. (If you have special weekend needs, I need to know 48hours in advance and my hourly rate applies and are added to the final invoice.)
A project is considered signed-off and billable when you approve it.
In ALL cases, unless otherwise specified and included in the Project Agreement, you are NOT paying for any source files. Source files may be available by special agreement only.