Right way create/update cms pages and static blocks

data-install.php

<?php
/**
 * Installation script for create about block
 */

$installer = $this;
$installer->startSetup();

// Block content
$blockContent = <<<EOD
<div class="about">
<div class="container">
<div class="list-about clearfix bg-white">
<div class="about-item">
<a href="{{store url="payment"}}">
<div class="about-pict"><img class="img-front" alt="" src="{{skin url=includes/main/extmedia/exmedia2911_icon1-1.png}}" /> <img class="img-profile" alt="" src="{{skin url=includes/main/extmedia/exmedia2931_icon1-2.png}}" /></div>
<h4 class="about-title text-left">Более 500 магазинов</h4>
</a>
</div>
<div class="about-item">
<a href="{{store url="payment"}}">
<div class="about-pict"><img class="img-front" alt="" src="{{skin url=includes/main/extmedia/exmedia2913_icon2-1.png}}" /> <img class="img-profile" alt="" src="{{skin url=includes/main/extmedia/exmedia2927_icon2-2.png}}" /></div>
<h4 class="about-title">Бесплатная доставка по всей РФ от 2000</h4>
</a>
</div>
<div class="about-item">
<a href="{{store url="payment"}}">
<div class="about-pict"><img class="img-front" alt="" src="{{skin url=includes/main/extmedia/exmedia2915_icon3-1.png}}" /> <img class="img-profile" alt="" src="{{skin url=includes/main/extmedia/exmedia2930_icon3-2.png}}" /></div>
<h4 class="about-title">Возможность забрать заказ в магазине</h4>
</a>
</div>
<div class="about-item">
<a href="{{store url="payment"}}">
<div class="about-pict"><img class="img-front" alt="" src="{{skin url=includes/main/extmedia/exmedia2917_icon4-1.png}}" /> <img class="img-profile" alt="" src="{{skin url=includes/main/extmedia/exmedia2929_icon4-2.png}}" /></div>
<h4 class="about-title">Одинаково ТВОЕ</h4>
</a>
</div>
<div class="about-item">
<a href="{{store url="payment"}}">
<div class="about-pict"><img class="img-front" alt="" src="{{skin url=includes/main/extmedia/exmedia2919_icon5-1.png}}" /> <img class="img-profile" alt="" src="{{skin url=includes/main/extmedia/exmedia2928_icon5-2.png}}" /></div>
<h4 class="about-title">Экология</h4>
</a>
</div>
</div>
</div>
</div>
EOD;

// Page content
$pageContent = <<<EOD
    {{block type="cms/block" block_id="home_page_about_block"}}
EOD;

// Create static block
$staticBlock = array(
    'title' => 'Home Page About Block',
    'identifier' => 'home_page_about_block',
    'content' => $blockContent,
    'is_active' => 1,
    'stores' => array(0)
);

$cmsPage = array(
    'title' => 'Home page',
    'identifier' => 'home',
    'content' => $pageContent,
    'is_active' => 1,
    'stores' => array(0),
    'root_template' => 'one_column'

);

// Create/Update static block
$block = Mage::getModel('cms/block')->load($staticBlock['identifier']);
if ($block->getId()) {
    $block->setContent($staticBlock ['content']);
    $block->setTitle($staticBlock ['title']);
    $block->save();
} else {
    Mage::getModel('cms/block')->setData($staticBlock )->save();
}

// Create/Update CMS Page
$page = Mage::getModel('cms/page')->load($cmsPage ['identifier']);
if ($page->getId()) {
    $page->setContent($cmsPage ['content']);
    $page->setTitle($cmsPage ['title']);
    $page->save();
} else {
    Mage::getModel('cms/page')->setData($cmsPage )->save();
}


$installer->endSetup();