Making Pages In WordPress

// Here are two codes I am trying to mix/ish
// This code will make pages (as many as I need) when you active a theme in wordpress
// How ever, it does NOT set  a template to use OR Content

function create_initial_pages() {
    $pages = array(
        'page1' => 'Page 1',
        'page2' => 'Page 2',
        'page3' => 'Page 3',
        'page4' => 'Page 4'
    );
    foreach($pages as $page_url => $page_title) {
        $id = get_page_by_title($page_title);
        $page = array(
            'post_type'   => 'page',
        'post_name'   => $page_url,
            'post_title'  => $page_title,
            'post_status' => 'publish',
            'post_author' => 1,
            'post_parent' => ''
        );
        if (!isset($id)) wp_insert_post($page);
    };
}


// This is code I have will only make ONE page but it will set some content and a template
// that will be used when making the page...

if (isset($_GET['activated']) && is_admin()){
    $new_page_title = 'Sitemap';
    $new_page_content = ' ';
    $new_page_template = 'sitemap.php'; //ex. template-custom.php. Leave blank if you don't want a custom page template.
    //don't change the code bellow, unless you know what you're doing
    $page_check = get_page_by_title($new_page_title);
    $new_page = array(
        'post_type' => 'page',
        'post_title' => $new_page_title,
        'post_content' => $new_page_content,
        'post_status' => 'publish',
        'post_author' => 1,
    );
    if(!isset($page_check->ID)){
        $new_page_id = wp_insert_post($new_page);
        if(!empty($new_page_template)){
            update_post_meta($new_page_id, '_wp_page_template', $new_page_template);
        }
    }
}

///  Both codes work, but I need code that will make more than one page and set everything. . .
/// I think this would word if I were to use a 2 dimensional array but my coding is not that good.. . .

// Here is a bad a temp to show what I am trying to do with code. . .
// I did comment out my bad coding to make it so you could see it



if (isset($_GET['activated']) && is_admin()){
    add_action('init', 'create_initial_pages');
}
function create_initial_pages() {
    $pages = array(
        'page1' => 'Page 1', // => 'Content Coming Soon', => 'custom-file.php',
        'page2' => 'Page 2', // => 'Content Coming Soon', => 'custom-file.php',
        'page3' => 'Page 3', // => 'Content Coming Soon', => 'custom-file.php',
        'page4' => 'Page 4'  // => 'Content Coming Soon', => 'custom-file.php',
    );
    foreach($pages as $page_url => $page_title /** => $coming_content => $cuustom_file **/ ) {
        $id = get_page_by_title($page_title);
        $page = array(
            'post_type'   =>  'page',
            'post_name'   =>  $page_url,
            'post_title'  =>  $page_title,
            'post_content' => $page_content,
            'post_status' =>  'publish',
            'post_author' =>  1,
            'post_parent' =>  ''
        );
        if (!isset($id)) wp_insert_post($page);

        if(!isset($id->ID)){
        $new_page_id = wp_insert_post($new);
        if(!empty($cuustom_file)){
            update_post_meta($new_page_id, '_wp_page_template', $cuustom_file);
        }
    }



    };
}
$page_check = get_page_by_title($new_page_title);