gio prepared a configuration for us specific to the wr841N that we 
are using very successfully on 9 machines in can masdeu (a community in 
Barcelona) which removed batman, bmx6, ad-hoc, and other components, and
 would do the trick - if you are connecting the routers via LAN cable. I
 am very happy with it, you can download the image here:
 unfortunately I don't remember where the configuration files were stored, on github or someplace else... gio?
here is the configuration of /etc/config/lime, for what it's worth:
                                                                                                                     config lime 'system'                                                                                                 
        option hostname 'cmd-capilla'                                                                                
        option domain 'lan'                                                                                                                                                                                                               
config lime 'network'                                                                                                
        option primary_interface 'eth0'                                                                              
        list resolvers '4.2.2.2'                                                                                     
        list resolvers '141.1.1.1'                                                                                   
        list resolvers '2001:470:20::2'                                                                              
        list protocols 'lan'                                                                                         
        option main_ipv4_address '
10.13.0.0/16'                                                                      
        option main_ipv6_address '2a00:1508:0a%M4:%M600::/64'                                                                                                                                                                             
config lime 'wifi'                                                                                                   
        list modes 'ap'                                                                                              
        option ap_ssid 'CanMasdeu'                                                                                   
        option distance '1000'                                                                                       
        option htmode_5ghz 'HT40'                                                                                    
        option channel_2ghz '11'                                                                                     
        option channel_5ghz '48'                                                                                                                                                                                                          
~