First, let me say that I know you are quite anxious to start. With that said, just go through the process and the timing will work itself out. I would be very surprised if you began rookie class as a Fire Medic without NR card in hand.
With all that in mind, there's a recruit class starting on May 28th '07. Would the fact that I'm enrolled at NOVA and will take the final EMT-I test in May for the National exam push my chances to make that May 28th class in your opinion? (assuming they like me after all the testing this year!)