Employing staff. Put their salary in the budget for 6 months before looking. Make sure you can pay them. Employ loyal people. Employ character. Check out references. You can teach them to be better soul winners. Let these 3 things veto 1) Finances 2) Facilities 3)Faculty.
Employ slowly. Fire slowly. You are just as much at fault if you got the wrong person. Never employ famous people. Check their loyalty. Check their soul winning. Check their work habits. Check with their former pastor. Get permission to talk to potential staff. Pray.