Self-referential model with has_many :through, Rails

Override.rb

class Override < ActiveRecord::Base
  belongs_to :recruiter, :class_name => "Rep"
  belongs_to :signer, :class_name => "Rep"
end

Rep.rb

class Rep < ActiveRecord::Base

  # Self-referential relationships through overrides
  
  # overrides this rep gets: `rep.downline_overrides`
  has_many  :downline_overrides, 
            :foreign_key => 'recruiter_id',
            :class_name => 'Override',
            :dependent => :destroy

  # overrides this rep is "giving": `rep.upline_overrides`
  has_many  :upline_overrides, 
            :foreign_key => 'signer_id',
            :class_name => 'Override',
            :dependent => :destroy

  # people this rep receives an override on `rep.signers`
  has_many :signers, :through => :upline_overrides

  # people receiving an override on this rep `rep.recruiters`
  has_many :recruiters, :through => :downline_overrides  
  
end

Thanks!