[SamAtt]

I agree with your points but wanted to put special attention on 1 & 2 because I've found those to be the most important in my own experience.

Generally what I do is to make a class diagram and then hand it to an outsourced coder to create. That way there's no question of what is supposed to go in and what is supposed to come out and I can test it easily. Plus that way allows me to keep track of which pieces I outsourced so even if I get a bad coder who writes inefficient code I can go back at a later date and correct his work.