more than 2 feeds

Is it possible to have more than 2 dashboard feeds?

could i add more than 2? by adding more code like so:

$widget_options['dashboard_tertiary']['link']         = 'http://3rdsite.com/';
    $widget_options['dashboard_tertiary']['url']          = 'http://3rdsite.com/feed/';
    $widget_options['dashboard_tertiary']['title']        = 'Latest 3rdsite Pages';
    $widget_options['dashboard_tertiary']['items']        = 3;
    $widget_options['dashboard_tertiary']['show_summary'] = true;
    $widget_options['dashboard_tertiary']['show_author']  = true;
    $widget_options['dashboard_tertiary']['show_date']    = true;

and

//delete cache for update the widget when we change values of options
        if ( $current_widget_options['dashboard_tertiary']['link']         != $widget_options['dashboard_tertiary']['link'] ||
             $current_widget_options['dashboard_tertiary']['url']          != $widget_options['dashboard_tertiary']['url'] ||
             $current_widget_options['dashboard_tertiary']['items']        != $widget_options['dashboard_tertiary']['items'] ||
             $current_widget_options['dashboard_tertiary']['show_summary'] != $widget_options['dashboard_tertiary']['show_summary'] ||
             $current_widget_options['dashboard_tertiary']['show_author']  != $widget_options['dashboard_tertiary']['show_author'] ||
             $current_widget_options['dashboard_tertiary']['show_date']    != $widget_options['dashboard_tertiary']['show_date'] )
        {
            $cache_key = 'dash_' . md5( 'dashboard_tertiary' );
            delete_transient( $cache_key );

reason I am asking is i have 3 sites which i need to network together
site 1 needs to show feeds from all 3 sites within dashboard