a man with many quetions

[Drocona]

1, yes I believe this can be done through mani admin plugin (just read the documentation on it)

2, yes you can also do this in mani admin plugin. (read the documentation about adding admins)

3, yes there is, altho you'd have to make yur own plugin for that. Best solution is in your question, bind "<keyhere>" "rcon_password <passwordhere>"