Tell them you want to double every five years or less. Your energy and vision will get their attention. Ask them for recommendations. They can send their own name or anyone else they know. Ask them to think also about good laymen who have grown classes that might be ready to go to the next level.
Pastors know pastors.
If you send out this many letters to the church in your area, you will get a pile of resumes. You want a pile of resumes because you have a method below that is going to eliminate most of them. Unless you start with a bunch, you won't have any at this point. A word about paper work. Because this approach is to gather lots of resumes up front, I don't recommend that you make copies of all these for every committee member.