[lineslinger]

When you get close, really close, walk away....take 24 hrs and think about where you are with it. Go and study what you think it should be presented as, no last minute concessions now. Do a shakedown when it works for you, a SHORT one, there will be lottsa bugs, deal with them one at a time and take your time, don't let the anxiety of impatience screw up your new car.
In my former biz we used to say "hurry up and f#*k up".