Before hiring your next great sales professional, you have to decide if you are in a ready to create a commitment to training, developing and managing them. If you are not in that position, do everyone a favor - don't hire them.
Sales professionals aren't robots you wind up and send out the entranceway to simply sell stuff. If it were only so easy. Like everybody else in your organization they have to be managed, developed, and educated. In this case they have to know the product offering, the sales process, the mark market, the messaging, metrics, expectations, and management program. If next sale dates don't have an excellent handle on these aspects in your own business, what makes you imagine that any sales person will simply figure it out and be successful? Being an experience has demonstrated over and over, they won't.