Hi potatohead,
If you took this most recent CAT in a realistic and Test-like fashion, then I would say that you have a good chance to score 700+ on your Official GMAT. There are a variety of external factors that can influence your performance though, so it's important that you try to get some extra rest in the next few days (so that you can go into the Test calm, clear-headed and ready to work).
The issues that you described (re: being able to solve questions when you review them after-the-fact, without having to deal with the pressure of the countdown-clock) is something that many Test Takers experience. That level of 'comfort' with the material usually comes after some significant (and consistent) study time - which is something that you haven't quite put into the process yet. You might still perform just fine on Test Day, but some additional study time and effort might be required for you to hit your score goal.
1) When are you planning to apply to Business School?
2) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich