Do you have a running demo of this?

To route a user to his/her proper page after a successful login, you could do something like this

firebaseapp.controller('LoginController', ['$scope', 'Authentication', function($scope, Authentication) {

      $scope.login = function() {
          Authentication.login($scope.user).then(function(){

            /** 
             * Assuming your Login function returns a promise (it might not at the moment)
             */

            //CHECK TYPE OF USER HERE
            //DEFINE TYPE HOWEVER YOU WANT
            if(typeOfUser === "Admin"){
                // ROUTE TO ADMIN PAGE
            }
            if(typeOfUser === "Guest"){
                // ROUTE TO GUEST PAGE
            }
          });
      }; // login function

      /** Leaving out the rest of the functions for brevity ... */

}]); // LoginController

For restricted access, you can check user's role/permission at the state level and decide whether or not to allow them.

For more granular control, at the component level, you might want a directive that defines the allowed roles/permission combination and checks against the user's roles and permissions

This might help with that: github.com/mikemclin/angular-acl