8:10 is fine, nice and fresh with a clear head for the day, the examiner has been trained to take certain things into consideration, they are uber experts. If you've had enough practice you should be relatively okay.
You're going to have to drive in busy town areas anyway, as long as you do all you're observations, I can't see where the problem would be.
Oh yeah just one thing that really gets on my *insert bodypart here* is this ludicrous 'Quota' *insert expletive here*, that people use as an excuse for their faults, come on people, be big enough to admit that we're not exactly perfect, for crying out loud you've only been driving for a year, maybe not even that!
If you're that worried people, get your driving instructors to sit in the back on your test.
I apologise for that 'little' rant but its relevant in a round about way, it wasn't aimed at any one person here, just those that believe in the 'quota'.