Reach out to people on Forums, such as this one. Find players who like the server and are unlikely to abuse for their own benefit. Have trials for both moderator and the step between moderator an admin. This will help iron out people who won't help
And please, don't use paidmins... People who pay for admins on servers that allow it are just cancer.
"It never hurts to keep looking for sunshine" - A. A. Milne