1. PHP REQUIREMENT LINK : https://www.clicshopping.org/forum/technical-information/ and also check /install/templates/pages/ (line 53 i.e if (version_compare(phpversion(), '8.3', '<'))) and https://github.com/ClicShopping#Requirement . In 4.11 composer dependencies need PHP 8.4 (reference from Core/ClicShopping/External/vendor/composer/platform_check.php, On 8.3 following error is thrown i.e Your Composer dependencies require a PHP version ">= 8.4.0", hence we have kept 8.4.0 as PHP requirement in info.xml) 
2. Timezone : Select New York.
3. Install without demo data.
4. Keep SMTP details blank.
5. 'api_key' & 'mcp_key' column value is hardcoded in `clic_api` & `clic_mcp` table in Core\ClicShopping\Apps\Configuration\Api\Sql\MariaDb\MariaDb.php, no need to configure.
Refer \install\Db\clicshopping.sql file.