Never go against your first instinct. I interviewed a guy who was so cocky it was a turn off. However, we needed someone so bad we hired him. However, for a short while it looked like a good hire. He knew more than we thought he did and could give him bigger jobs. But it only took a few weeks for the worm to turn. He had a bad attitude, his jobs started coming back, and his productivity was non existent. He cost me a lot. What a huge mistake.