I was in the same situation since I felt somewhat mixed about my interviews. But then I remembered that there are secondaries, fees, etc that you have to send in, so I decided to not apply for more. Too much of a pain at this point. I would rather use my year off and go teach english overseas and enjoy another year of my life before reapplying next year. It'll cost a boatload of money next year, but what's another grand or two in the long run. And you'll have a year of fun, experience, and more money to save/pay for it regardless. Good luck!