I would say leave it and wait - you'll regret it later on.
I found an ED30, exactly the options I was after and more, at a great price. Low miles and 2 years left on its warranty (57 plate). It was 300 miles away from me, but I dont mind travelling out for the my perfect match anyways.
The only reason I turned it down was because it was in black. I have a black car and dont want another. If it was in Silver/Grey/White I would have snapped it up straight away, but I feel black shows marks up quick and easy, and you easily see swirls and dirt etc - even though it looks awesome when showroom clean.
If I had of still went for it, I know later on I would have continued to wish the car was one of the colours I was after!
Dont rush the purchase. Its not a small one, and the right car will come along soon!