Finding growers for pollination contracts

[Paladin]

I'm looking for advice on finding growers in North Carolina for pollination services and prices to charge. How many hives should I have at full strength (10 frames) before I approach a grower to offer services? How can I find growers in my area? Also, where can I find out when the various crops are ready for pollination, so I can get an idea of a schedule.

From what I've read, it looks like for most crops in my area, I need about 2 hives per acre on average. I'm thinking that with 10 hives, I should only approach small growers with about 5-10 acres of crop, but I don;t know how to find them.